<PAGE>
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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

                            ------------------------

                                   FORM 10-Q

(MARK ONE)

<TABLE>
<C>        <S>
   /X/     QUARTERLY REPORT UNDER SECTION 13 OR 15(d) OF THE
           SECURITIES EXCHANGE ACT OF 1934
</TABLE>

              FOR THE QUARTERLY PERIOD ENDED DECEMBER 31, 1999 OR
                                       OR

<TABLE>
<C>        <S>
   / /     TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
           SECURITIES EXCHANGE ACT OF 1934
</TABLE>

        FOR THE TRANSITION PERIOD FROM ______________ TO ______________

                        COMMISSION FILE NUMBER 000-27405

                            ------------------------

                                 NETZERO, INC.

             (Exact name of registrant as specified in its charter)

<TABLE>
<S>                                            <C>
               DELAWARE                                     95-4644384
    (State or other jurisdiction of            (I.R.S. Employer Identification No.)
    incorporation or organization)

          2555 TOWNSGATE ROAD                                 91361
     WESTLAKE VILLAGE, CALIFORNIA                           (Zip Code)
(Address of principal executive office)
</TABLE>

                                 (805) 418-2000
              (Registrant's telephone number, including area code)

                                      N/A
   (Former name, former address and former fiscal year, if changed since last
                                    report)

                            ------------------------

    Indicate by check mark whether the registrant (1) has filed all documents
and reports required to be filed by Section 13 or 15(d) of the Securities
Exchange Act of 1934 during the preceding 12 months (or for such shorter period
that the registrant was required to file such reports), and (2) has been subject
to such filing requirements for the past 90 days. Yes /X/  No / /

    Indicate the number of shares outstanding of each of the issuer's classes of
common stock, as of the latest practicable date.

    Number of shares of Common Stock outstanding as of December 31, 1999:
104,794,489 shares.

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
<PAGE>
                                     INDEX

<TABLE>
<CAPTION>
                                                                                      PAGE
                                                                                    --------
<S>                   <C>                                                           <C>
PART I  FINANCIAL INFORMATION

Item 1.               Balance Sheets at December 31, 1999 and June 30, 1999.......         3
                      Statements of Operations for the three months ended
                        December 31, 1999 and 1998 and the six months ended
                        December 31, 1999 and 1998................................         4
                      Statements of Cash Flows for the six months ended
                        December 31, 1999 and 1998................................         5
                      Notes to Financial Statements...............................         6
Item 2.               Management's Discussion and Analysis of Financial Condition
                        and Results of Operations.................................         8
Item 3.               Quantitative and Qualitative Disclosures About Market
                        Risk......................................................        31

PART II  OTHER INFORMATION

Item 1.               Legal Proceedings...........................................        32
Item 2.               Changes in Securities and Use of Proceeds...................        32
Item 3.               Defaults Upon Senior Securities.............................        32
Item 4.               Submission of Matters to a Vote of Security Holders.........        32
Item 5.               Other Information...........................................        32
Item 6.               Exhibits and Reports on Form 8-K............................        33
                      A. Exhibits.................................................
                      B. Reports on Form 8-K......................................
Signatures........................................................................        34
</TABLE>

    In this Report, "NetZero," the "Company," "we," "us" and "our" collectively
refers to NetZero, Inc. and its wholly-owned subsidiaries.

                                       2
<PAGE>
PART I. FINANCIAL INFORMATION

                                 NETZERO, INC.
                          CONSOLIDATED BALANCE SHEETS

<TABLE>
<CAPTION>
                                                              DECEMBER 31,     JUNE 30,
                                                                  1999           1999
                                                              ------------   ------------
                                                              (UNAUDITED)
<S>                                                           <C>            <C>
                                         ASSETS
Current assets:
  Cash and cash equivalents.................................  $152,103,000   $ 24,035,000
  Restricted cash...........................................     9,076,000             --
  Accounts receivable, net of allowance for doubtful
    accounts of $450,000 at December 31, 1999 and $160,000
    at June 30, 1999........................................     7,532,000      2,253,000
  Other current assets......................................     5,279,000        689,000
                                                              ------------   ------------
    Total current assets....................................   173,990,000     26,977,000
Property and equipment, net.................................    23,658,000     18,116,000
Restricted cash.............................................     1,888,000      1,789,000
Intangible assets...........................................    23,041,000             --
Other assets................................................     7,620,000        619,000
                                                              ------------   ------------
    Total assets............................................  $230,197,000   $ 47,501,000
                                                              ============   ============

                          LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
  Accounts payable..........................................  $ 16,301,000   $  4,879,000
  Accrued liabilities.......................................     1,673,000      1,521,000
  Deferred revenue..........................................     1,827,000      2,739,000
  Current portion of notes payable..........................     1,529,000        560,000
  Current portion of capital leases.........................     2,825,000      1,181,000
                                                              ------------   ------------
    Total current liabilities...............................    24,155,000     10,880,000

Notes payable less current portion..........................     2,993,000      1,210,000
Capital leases less current portion.........................     5,411,000      2,317,000

Redeemable convertible preferred stock, no-par value;
  19,231,000 shares authorized; 19,230,000 issued and
  outstanding at June 30, 1999; liquidation preference and
  redemption value of $2,140,000; no shares issued or
  outstanding at December 31, 1999..........................            --      2,140,000

Stockholders' equity
  Convertible preferred stock, $0.001 par value; 55,769,000
    shares authorized; 45,182,000 shares issued and
    outstanding at June 30, 1999; liquidation preference of
    $44,917,000; 10,000,000 shares authorized and no shares
    issued and outstanding at December 31, 1999.............            --     44,720,000
  Common stock, $0.001 par value; 500,000,000 and
    150,000,000 shares authorized at December 31, 1999 and
    June 30, 1999, respectively; 104,794,000 and 28,624,000
    shares issued and outstanding at December 31, 1999 and
    June 30, 1999, respectively.............................       105,000      1,352,000
  Additional paid-in capital................................   261,178,000      9,019,000
  Notes receivable from stockholders........................    (1,048,000)    (1,029,000)
  Deferred stock compensation...............................    (7,768,000)    (7,783,000)
  Accumulated deficit.......................................   (54,829,000)   (15,325,000)
                                                              ------------   ------------
    Total stockholders' equity..............................   197,638,000     30,954,000
                                                              ------------   ------------
    Total liabilities and stockholders' equity..............  $230,197,000   $ 47,501,000
                                                              ============   ============
</TABLE>

  The accompanying notes are an integral part of these consolidated financial
                                  statements.

                                       3
<PAGE>
                                  NETZERO, INC

                     CONSOLIDATED STATEMENTS OF OPERATIONS

                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                  THREE MONTHS                  SIX MONTHS
                                                     ENDED                        ENDED
                                                  DECEMBER 31,                 DECEMBER 31,
                                           --------------------------   --------------------------
                                               1999          1998           1999          1998
                                           ------------   -----------   ------------   -----------
<S>                                        <C>            <C>           <C>            <C>
Net revenues.............................  $ 12,242,000   $   122,000   $ 19,962,000   $   122,000
Cost of revenues (excluding stock-based
  charges of $101,000 and $189,000 for
  the three and six months ended
  December 31, 1999, respectively).......    15,148,000     1,064,000     27,242,000     1,070,000
                                           ------------   -----------   ------------   -----------
GROSS LOSS...............................    (2,906,000)     (942,000)    (7,280,000)     (948,000)
                                           ------------   -----------   ------------   -----------
OPERATING EXPENSES
  Sales and marketing (excluding
    stock-based charges of $280,000 and
    $524,000 for the three and six months
    ended December 31, 1999,
    respectively)........................    15,582,000       282,000     20,547,000       312,000
  Product development (excluding stock-
    based charges of $85,000 and $159,000
    for the three and six months ended
    December 31, 1999, respectively).....     1,414,000       187,000      2,230,000       195,000
  General and administrative (excluding
    stock-based charges of $1,029,000 and
    $46,000 for the three months ended
    December 31, 1999 and 1998 and
    $1,927,000 and $156,000 for the six
    months ended December 31, 1999 and
    1998, respectively)..................     4,458,000       332,000      7,991,000       395,000
  Stock-based compensation...............     1,495,000        46,000      2,798,000       156,000
  Amortization of intangible assets......       658,000            --        658,000            --
                                           ------------   -----------   ------------   -----------
    Total operating expenses.............    23,607,000       847,000     34,224,000     1,058,000
                                           ------------   -----------   ------------   -----------
    LOSS FROM OPERATIONS.................   (26,513,000)   (1,789,000)   (41,504,000)   (2,006,000)
Interest income..........................     2,396,000            --      2,681,000            --
Interest expense.........................      (459,000)       (6,000)      (680,000)       (6,000)
                                           ------------   -----------   ------------   -----------
    NET LOSS.............................  $(24,576,000)  $(1,795,000)  $(39,503,000)  $(2,012,000)
                                           ============   ===========   ============   ===========
Basic and diluted net loss per share.....  $      (0.27)  $     (0.22)  $      (0.74)  $     (0.19)
                                           ============   ===========   ============   ===========
Shares used to calculate basic and
  diluted net loss per share.............    89,382,000     8,025,000     53,122,000    10,738,000
                                           ============   ===========   ============   ===========
</TABLE>

  The accompanying notes are an integral part of these consolidated financial
                                  statements.

                                       4
<PAGE>
                                 NETZERO, INC.

                      CONSOLIDATED STATEMENTS OF CASH FLOW

                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                   SIX MONTHS ENDED
                                                                     DECEMBER 31,
                                                              --------------------------
                                                                  1999          1998
                                                              ------------   -----------
<S>                                                           <C>            <C>
Cash flows from operating activities:
  Net loss..................................................  $(39,503,000)  $(2,012,000)
  Adjustments to reconcile net loss to net cash used for
    operating activities:
  Depreciation and amortization.............................     4,348,000        54,000
  Allowance for doubtful accounts...........................       290,000            --
  Stock-based compensation..................................     2,798,000       156,000
  Accrued interest--notes receivable from stockholders......       (40,000)           --
  Changes in operating assets and liabilities (excluding the
    effects of the acquisition of AimTV):
    Restricted cash.........................................    (9,100,000)           --
    Accounts receivable.....................................    (5,569,000)      (87,000)
    Other assets............................................    (2,966,000)      (92,000)
    Accounts payable and accrued expenses...................    10,875,000       946,000
    Deferred revenue........................................      (911,000)           --
                                                              ------------   -----------
      Net cash used for operating activities................   (39,778,000)   (1,035,000)
                                                              ------------   -----------
Cash flows from investing activities:
  Purchases of property and equipment.......................    (8,448,000)     (384,000)
                                                              ------------   -----------
Cash flows from financing activities:
  Payments on capital leases................................    (1,013,000)           --
  Payments on notes payable.................................      (747,000)           --
  Proceeds from equipment refinancing.......................     5,115,000            --
  Proceeds from notes payable...............................     3,498,000            --
  Repayment of note due from stockholders...................        21,000            --
  Proceeds from exercise of stock options...................       120,000            --
  Net proceeds from issuance of common stock................   169,300,000       118,000
  Net proceeds from issuance of redeemable convertible
    preferred stock.........................................            --     1,503,000
                                                              ------------   -----------
  Net cash provided by financing activities.................   176,294,000     1,621,000
                                                              ------------   -----------
  Change in cash and cash equivalents.......................   128,068,000       202,000
Cash and cash equivalents, beginning of period..............    24,035,000         1,000
                                                              ------------   -----------
Cash and cash equivalents, end of period....................  $152,103,000   $   203,000
                                                              ============   ===========
Supplemental disclosure of cash flow activities:
  Cash paid for interest....................................  $    680,000   $     6,000
                                                              ============   ===========
  Equipment obtained under capital leases...................  $    637,000   $   280,000
                                                              ============   ===========
  Stock issued for acquisition of AimTV.....................  $ 23,249,000   $        --
                                                              ============   ===========
  Issuance of warrant for marketing services................  $  8,600,000   $        --
                                                              ============   ===========
</TABLE>

  The accompanying notes are an integral part of these consolidated financial
                                  statements.

                                       5
<PAGE>
                                 NETZERO, INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                                  (UNAUDITED)

1.  ORGANIZATION AND BUSINESS.

    NetZero was incorporated in July 1997 and launched its service in
October 1998. NetZero provides consumers with free access to the Internet while
offering online advertisers an effective way to reach those consumers.

2.  BASIS OF PRESENTATION.

    The financial statements are unaudited, other than the balance sheet
information for the Company as of June 30, 1999 and, in the opinion of
management, reflect all adjustments (consisting only of normal recurring
adjustments) that are necessary for a fair presentation of the results for the
periods shown. The results of operations for such periods are not necessarily
indicative of the results expected for the full fiscal year or for any future
period. Certain amounts in the prior year's financial statements have been
reclassified to conform with the presentation of the current period. These
financial statements should be read in conjunction with the financial statements
as of June 30, 1999 and related notes included in the Company's final prospectus
dated September 23, 1999 related to its initial public offering as filed with
the Securities and Exchange Commission (the "SEC").

    The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the amounts reported in the financial statements. Actual
results may differ from those estimates.

3.  ACQUISITION.

    On December 1, 1999, the Company acquired AimTV, Inc. ("AimTV") in a
stock-for-stock transaction. AimTV has developed a patent-pending technology
designed to enable advertisers to run broadcast-quality commercials over
narrowband Internet connections. Pursuant to the terms of the agreement, the
outstanding capital stock and options of AimTV were exchanged for approximately
970,000 shares of Common Stock and options to purchase Common Stock of NetZero.
The transaction has been accounted for under the purchase method.

The following summarized unaudited pro forma financial information for the six
months ended December 31, 1999 assumes that the acquisition of AimTV had
occurred at the beginning of the period:

<TABLE>
<S>                                                           <C>
Revenues....................................................  $ 19,962,000
Net loss....................................................  $(45,084,000)
Net loss per share..........................................  $      (0.84)
</TABLE>

4.  CONCENTRATION OF CREDIT RISKS.

    At December 31, 1999, one customer comprised 31% of the accounts receivable
balance. For the quarter ended December 31, 1999, two customers accounted for
34% and 19% of revenues and for the six months ended December 31, 1999, two
customers accounted for 36% and 23% of revenues.

                                       6
<PAGE>
                                 NETZERO, INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

                                  (UNAUDITED)

5.  EQUITY.

    STOCK SPLIT

    In July 1999, the Company authorized and implemented a three-for-two forward
stock split. The share information in the accompanying financial statements has
been retroactively restated to reflect the effect of the stock split.

    INITIAL PUBLIC OFFERING

    In September 1999, the Company completed an initial public offering in which
the Company sold 11,500,000 shares of its Common Stock, including 1,500,000
shares in connection with the exercise of the underwriters' over-allotment
option, at $16 per share. The proceeds to the Company from the offering, after
deducting offering expenses, including underwriting discounts and commissions,
were $171,120,000. Upon the closing of the offering, all of the Company's then
outstanding Preferred Stock automatically converted into Common Stock on a
one-for-one basis. After the offering, the Company's authorized capital consists
of 510,000,000 shares of capital stock (500,000,000 shares of Common Stock and
10,000,000 shares of Preferred Stock) of which approximately 104,794,000 shares
of Common Stock were outstanding at December 31, 1999. Please refer to
"Part II--Other Information--Item 2(d)" for a discussion of use of proceeds from
the Company's initial public offering.

6.  NET LOSS PER SHARE.

    The Company has adopted Statement of Financial Accounting Standards (SFAS)
No. 128, "Earnings per Share" ("EPS"). SFAS No. 128 requires dual presentation
of basic and diluted EPS. Basic EPS represents the weighted average number of
shares outstanding divided into net income attributable to common stockholders
during a reported period. Diluted EPS reflects the potential dilution that could
occur if securities or other contracts to issue common stock were exercised or
converted into common stock. However, the Company has not included potential
common stock in the calculation of EPS as such inclusion would have an
anti-dilutive effect.

    The following table sets forth the computation of basic and diluted net loss
per share:

<TABLE>
<CAPTION>
                                               THREE MONTHS ENDED             SIX MONTHS ENDED
                                           ---------------------------   ---------------------------
                                           DECEMBER 31,   DECEMBER 31,   DECEMBER 31,   DECEMBER 31,
                                               1999           1998           1999           1998
                                           ------------   ------------   ------------   ------------
<S>                                        <C>            <C>            <C>            <C>
Numerator:
  Net Loss...............................  $(24,576,000)  $(1,795,000)   $(39,503,000)  $(2,012,000)
                                           ------------   -----------    ------------   -----------
Denominator:
  Weighted average common shares.........   104,802,000    15,545,000      67,867,000    15,273,000
  Adjustment for common shares subject to
    repurchase...........................   (15,420,000)   (7,520,000)    (14,745,000)   (4,535,000)
                                           ------------   -----------    ------------   -----------
  Adjusted weighted average common
    shares...............................    89,382,000     8,025,000      53,122,000    10,738,000
                                           ------------   -----------    ------------   -----------
Basic and diluted net loss per share.....  $      (0.27)  $     (0.22)   $      (0.74)  $     (0.19)
                                           ============   ===========    ============   ===========
</TABLE>

7.  COMMITMENTS AND CONTINGENCIES.

    The Company is not currently party to any material legal proceedings.

                                       7
<PAGE>
ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
        OF OPERATIONS

    This report on Form 10-Q contains forward-looking statements based on our
current expectations, estimates and projections about our industry, management's
beliefs and certain assumptions made by us. Words such as "anticipates,"
"expects," "intends," "plans," "believes," "may," "will" or similar expressions
are intended to identify forward-looking statements. In addition, any statements
that refer to expectations, projections or other characterizations of future
events or circumstances, including any underlying assumptions, are
forward-looking statements. Such statements are not guarantees of future
performance and are subject to certain risks, uncertainties and assumptions that
are difficult to predict. Therefore, our actual results could differ materially
and adversely from those expressed in any forward-looking statements as a result
of various factors. The section entitled "Risk Factors" set forth in this
Form 10-Q and similar discussions in our registration statement declared
effective by the SEC on September 23, 1999, discuss some of the important risk
factors that may affect our business, results of operations and financial
condition. You should carefully consider those risks, in addition to the other
information in this report and in our other filings with the SEC, before
deciding to invest in our company or to maintain or increase your investment. We
undertake no obligation to revise or update publicly any forward-looking
statements for any reason. The information contained in this Form 10-Q is not a
complete description of our business or the risks associated with an investment
in our common stock. We urge you to carefully review and consider the various
disclosures made by us in this report and in our other reports filed with the
SEC that discuss our business in greater detail.

OVERVIEW

    NetZero is pioneering a new Internet service model that provides consumers
with free and easy access to the Internet while offering online advertisers an
effective way to target those users. We offer users a simple and compelling
proposition--free and unlimited Internet access as well as free e-mail and
navigational tools to enhance their online experience. For advertisers, we
believe our service offers a powerful online direct marketing tool with features
and functionality that have distinct advantages over traditional forms of online
advertising.

    An important feature of our service is The ZeroPort, a small window
displayed on our users' computer screens while they are online that is always
visible regardless of where they navigate. Users can move The ZeroPort to any
location on their screen but cannot close it or reduce its size. The ZeroPort
displays advertisements and advertiser-sponsored buttons and icons, all of which
can link directly to sites and services such as news, financial information,
sports and shopping.

    We were incorporated in July 1997 and launched our service in October 1998.
For the period from inception until October 1998, we had no revenues and our
operating activities related primarily to the development of our proprietary
zCast software. Since launching our service, we have continued these operating
activities and have also focused on:

    - developing changes to The ZeroPort to enhance its features and
      functionality;

    - implementing the zCast Server network cell infrastructure;

    - hiring personnel;

    - contracting with third-party communications providers;

    - selling advertising;

    - marketing our service to potential sponsors of placements on The ZeroPort;

    - marketing our service to consumers; and

    - pursuing distribution arrangements.

                                       8
<PAGE>
We have spent, and will continue to spend, significant resources on these
activities.

    On December 1, 1999, we acquired AimTV, Inc. ("AimTV") in a stock-for-stock
transaction. AimTV has developed a patent-pending technology designed to enable
advertisers to run broadcast-quality commercials over narrowband internet
connections. Pursuant to the terms of the agreement, the outstanding capital
stock and options of AimTV were exchanged for approximately 970,000 shares of
Common Stock and options to purchase Common Stock of NetZero. The transaction
has been accounted for under the purchase method.

REVENUES.

    We generate revenues generally through banner advertisements, sponsorships
on The ZeroPort, referrals of our users to other Web-sites, performance-based
agreements including e-commerce arrangements, advertising messages delivered to
our users via e-mail, and distribution agreements. Banner advertisements are
images displayed in the window of The ZeroPort. A user can click on the image
and be routed to an advertiser's Web-site. Advertisers pay us for the number of
advertisements displayed, the number of times users click on advertisements, or
based on other defined criteria. Sponsorships on The ZeroPort involve providing
an advertiser the right to be displayed on the face of The ZeroPort or on a drop
down menu for a specified period of time. We may receive fees for this right
alone, although many sponsorships also involve a commitment by us to deliver
banner advertisements or fulfill defined performance criteria. We also have the
ability to refer users to advertisers' Web-sites when they log on to our service
or when they click on buttons or drop down menus on The ZeroPort. Referral
payments are, in general, based upon the number of times users are directed to
advertisers' Web-sites. Performance-based arrangements may involve payments
dependent on the success of an advertising campaign, which may be measured by
the number of times users visit a Web-site, purchase products or register for
services. Revenues are also generated when our users elect to receive messages
from advertisers in their NetZero e-mail accounts and such messages are
delivered. In distribution arrangements, we may be paid by third parties for the
right to distribute the software containing our service with products of third
parties.

    Historically, The ZeroPort was limited in its capabilities, and our revenues
were generated primarily from non-targeted banner advertising, a majority of
which was sold through third parties such as Adsmart. We anticipate that a
significant portion of our banner inventory will be sold through third parties
in the future. We recently began generating revenues from selling targeted
banner advertisements and by referring our users to a Web-site we developed with
LookSmart.

    In August 1999, we released a substantially upgraded version of The ZeroPort
with features offering additional ways to generate revenues, including selling
exclusive and non-exclusive sponsorships of buttons and marquee space on The
ZeroPort as well as sponsorships of a customizable ticker tape and browser
window. Many of these agreements involve fee arrangements based on performance
criteria and we intend to enter into similar arrangements in the future.
However, since we have limited experience marketing and measuring the
performance of these types of arrangements we cannot predict the degree to which
they will become part of our revenue mix.

    We anticipate that we will receive higher advertising rates for targeted
advertisements and sponsorships than for non-targeted banner advertisements.
However, we have limited experience in selling and managing these types of
arrangements and there can be no assurance that we will successfully sell all of
the various advertising services we intend to offer or that such arrangements
will generate significant revenues or higher advertising rates. To date, we have
sold targeted advertising based upon Web-sites visited, key word searches, and
users' demographic and geographic information. In addition, the growth in our
user base has resulted, and may result in the future, in situations where our
advertising inventory capacity has increased faster than our ability to sell
such inventory at desired rates. While we rely on agreements with third parties
to sell a significant portion of our banner advertisements, such agreements are
short-term in nature and are subject to termination and pricing pressures. Due
to increased costs associated with more

                                       9
<PAGE>
users and greater inventory, our failure to renew such agreements or the failure
of the combination of such agreements and the efforts of our in-house sales
force to sell increased inventory at reasonable rates may materially and
adversely affect our operating results. In addition, our success with
performance-based fee arrangements may depend on our ability to effectively
target users. We are in the early stages of that process and may encounter
technical and other limitations on our ability to successfully target users,
including limitations associated with privacy concerns. In addition, while we
believe that the growth of our user base will enhance the value of our services
to our advertising customers, there can be no assurance that we will adequately
perform under these arrangements or that we will be able to replace such
arrangements on comparable terms, if at all. The failure to generate significant
sponsorships on The ZeroPort or the failure to replace significant contracts
when they expire could adversely affect our revenues and results of operations.

    Banner advertising and sponsorship revenues are recognized in the periods in
which the advertisement or sponsorship placement is displayed, based upon
impressions delivered over the total number of guaranteed impressions or ratably
over the period in which the advertisement is displayed, provided that no
significant obligations on our part remain and collection of the related
receivable is probable. Our obligations typically include the guarantee of a
minimum number of impressions or the satisfaction of other performance criteria.
The guaranteed minimum number of impressions are generally required to be
delivered over the term of the commitment. Revenues from performance-based
arrangements, including arrangements based on users' clicking on advertisements,
buttons or other placements on The ZeroPort, are recognized as the related
performance criteria are met. Referral revenues are recognized as referrals are
made to advertisers' or sponsors' Web-sites, provided that no significant
obligations on our part remain and collection of the related receivable is
probable.

    Our advertising revenues are subject to the effects of seasonality.
Advertisers typically purchase impressions on a forward basis. If purchasing
patterns or timing of purchasing by advertisers were to change, our operations
and quarter to quarter comparisons could be materially affected.

    Our revenues will be significantly affected by our ability to grow our user
base. If we are unable to grow our user base or our user demographics are not
attractive to advertisers, we may be unable to attract significant commitments
from advertisers or satisfy our agreements with our advertisers relating to
performance criteria.

    We do not currently anticipate that inflation will have a material impact on
our results of operations.

COST OF REVENUES.

    Cost of revenues consists of telecommunications costs, depreciation of our
network equipment, occupancy costs and personnel and related expenses of our
network. We intend to expend significant amounts of capital, which will result
in increased depreciation expense associated with these capital expenditures,
and to make significant commitments to future telecommunications capacity with
the expectation of a rapidly increasing subscriber base and anticipated usage
patterns. Telecommunications costs for network access are expensed as incurred.
Our failure to accurately forecast our users' needs could result in significant
overcapacity, which would adversely impact our results of operations.
Conversely, underforecasting usage could adversely impact the ability of our
users to receive adequate service and adversely impact our reputation and our
ability to maintain or increase our subscriber base. We have a limited history
in forecasting our users' requirements, and there can be no assurance that we
will be able to accurately forecast such requirements in the future.

SALES AND MARKETING.

    Sales and marketing expenses include advertising and promotion expenses,
salaries, sales commissions, employee benefits, travel and related expenses for
our direct sales force, fees paid to third-party advertising sales agents and
sales support functions. We have expended, and intend to continue to expend,

                                       10
<PAGE>
significant amounts on sales and marketing. In particular, we have commenced a
national branding campaign comprised of television and radio advertising,
sponsorships and a variety of other promotions. Due to the timing of these
promotions, amounts expended may vary significantly from quarter to quarter.
Marketing costs associated with increasing our brand awareness and user base are
expensed in the period incurred.

PRODUCT DEVELOPMENT.

    Product development costs include expenses for the development of new or
improved technologies designed to enhance the performance of our service,
including the salaries and related expenses for our software engineering
department, as well as costs for contracted services, facilities and equipment.
We believe that a significant level of product development activity is necessary
for our business and intend to increase as necessary the amount of spending to
fund this activity.

GENERAL AND ADMINISTRATIVE.

    General and administrative expenses include salaries, employee benefits and
expenses for our executive, finance, legal, human resources and customer support
personnel. In addition, general and administrative expenses include fees for
professional services, third-party customer support and occupancy costs. We
expect general and administrative expenses to increase as we continue to expand
our administrative infrastructure.

STOCK-BASED COMPENSATION.

    In connection with the grant of stock options to employees and the
imposition of restrictions on shares of stock held by certain founders during
the year ended June 30, 1999 and the six months ended December 31, 1999, we
recorded total deferred compensation of approximately $11.7 million. This
deferred compensation represented the difference between the deemed fair value
of our common stock for accounting purposes and the exercise price of these
options or shares at the date of grant. We are amortizing this amount over the
vesting periods of the applicable options or shares, generally four years,
resulting in an expense of $1.2 million for the year ended June 30, 1999,
$1.5 million for the three months ended December 31, 1999 and $2.8 million for
the six months ended December 31, 1999. Annual amortization of deferred stock
compensation for options granted and restricted shares is approximately
$5.3 million, $3.0 million, $1.6 million, $623,000 and $24,000 for the years
ending June 30, 2000, 2001, 2002, 2003 and 2004, respectively. Deferred
compensation is presented as a reduction of stockholders' equity.

                                       11
<PAGE>
CONSOLIDATED RESULTS OF OPERATIONS.

    The following tables set forth selected consolidated statements of
operations data in dollars and as a percentage of total revenues:

<TABLE>
<CAPTION>
                                                                    THREE MONTHS ENDED
                                                  ------------------------------------------------------
                                                  DECEMBER 31, 1999   SEPTEMBER 30, 1999   JUNE 30, 1999
                                                  -----------------   ------------------   -------------
                                                                      (IN THOUSANDS)
<S>                                               <C>                 <C>                  <C>
Revenues........................................      $ 12,242             $  7,720           $ 3,731
Cost of Revenues................................        15,148               12,093             7,377
                                                      --------             --------           -------
Gross Loss......................................        (2,906)              (4,373)           (3,646)
Operating Expenses:
  Sales and marketing...........................        15,582                4,975               850
  Product development...........................         1,414                  818               500
  General and administrative....................         4,458                3,522             2,396
  Stock-based compensation......................         1,495                1,303               892
  Amortization of intangible assets.............           658                   --                --
                                                      --------             --------           -------
Total operating expenses........................        23,607               10,618             4,638
                                                      --------             --------           -------
Loss from operations............................       (26,513)             (14,991)           (8,284)
Interest and other income (expense), net........         1,937                   64                91
                                                      --------             --------           -------
Net loss........................................      $(24,576)            $(14,927)          $(8,193)
                                                      ========             ========           =======
</TABLE>

<TABLE>
<CAPTION>
                                                                    THREE MONTHS ENDED
                                                  ------------------------------------------------------
                                                  DECEMBER 31, 1999   SEPTEMBER 30, 1999   JUNE 30, 1999
                                                  -----------------   ------------------   -------------
<S>                                               <C>                 <C>                  <C>
As a percentage of revenues:
Revenues........................................           100%                 100%              100%
Cost of Revenues................................          (124)                (157)             (198)
                                                      --------             --------           -------
Gross Loss......................................           (24)                 (57)              (98)
Operating Expenses:
  Sales and marketing...........................          (127)                 (64)              (23)
  Product development...........................           (12)                 (11)              (13)
  General and administrative....................           (37)                 (45)              (64)
  Stock-based compensation......................           (12)                 (17)              (24)
  Amortization of intangible assets.............            (5)                   0                 0
                                                      --------             --------           -------
Total operating expenses........................          (193)                (137)             (124)
                                                      --------             --------           -------
Loss from operations............................          (217)                (194)             (222)
Interest and other income (expense), net........            16                    1                 2
                                                      --------             --------           -------
Net loss........................................          (201)%               (193)%            (220)%
                                                      ========             ========           =======
</TABLE>

                                       12
<PAGE>
              THREE MONTHS ENDED DECEMBER 31, 1999 COMPARED TO THE
                     THREE MONTHS ENDED SEPTEMBER 30, 1999

REVENUES.

    Revenues for the three months ended December 31, 1999 were $12.2 million,
which represented an increase of $4.5 million, or 59%, from $7.7 million for the
three months ended September 30, 1999. The increase was primarily attributable
to revenues generated from our start page agreement with LookSmart, sponsorships
on The ZeroPort and increased sales of banner advertisements, primarily through
our in-house sales force. Specifically, we generated approximately
$4.1 million, or 34% of our total revenues for the three months ended
December 31, 1999, from our agreement with LookSmart, which we entered into in
April 1999. This amount represented an increase of approximately $1.1 million
from the $3.0 million of revenues generated from LookSmart for the three months
ended September 30, 1999, which represented approximately 39% of our total
revenues for that period. We also generated approximately $2.4 million, or 19%
of our total revenues for the three months ended December 31, 1999, from banner
advertisements sold through Adsmart. This amount represented an increase of
approximately $0.1 million from the $2.3 million of revenues generated from
Adsmart for the three months ended September 30, 1999, which represented
approximately 29% of our total revenues for that period.

COST OF REVENUES.

    Cost of revenues for the three months ended December 31, 1999 was
$15.1 million, which represented an increase of $3.0 million, or 25%, from
$12.1 million for the three months ended September 30, 1999. The increase was
primarily attributable to increased telecommunications expense related to the
growth in our user base and increased depreciation related to our internal
network costs. During the December quarter, the Company's cost of
telecommunications services purchased averaged less than $0.30 per user hour.

SALES AND MARKETING.

    Sales and marketing expenses for the three months ended December 31, 1999
were $15.6 million, which represented an increase of $10.6 million, or 213%,
from $5.0 million for the three months ended September 30, 1999. The increase
was primarily due to increased levels of advertising and other marketing
expenses associated with the Company's initial major nationwide consumer
branding campaign, distribution of CDs containing our software, the start of our
exclusive sponsorship of the half time show of televised National Basketball
Association games on NBC, and the hiring of additional direct sales force
personnel.

PRODUCT DEVELOPMENT.

    Product development expenses for the three months ended December 31, 1999
were $1.4 million, which represented an increase of $0.6 million, or 73%, from
$0.8 million for the three months ended September 30, 1999. The increase was
primarily due to the hiring of additional software engineers and professional
expenses.

GENERAL AND ADMINISTRATIVE.

    General and administrative expenses for the three months ended December 31,
1999 were $4.5 million, which represented an increase of $1.0 million, or 27%,
from $3.5 million for the three months ended September 30, 1999. The increase
was primarily due to the hiring of additional administrative personnel and
increased professional and consulting expenses.

                                       13
<PAGE>
STOCK-BASED COMPENSATION.

    For the three months ended December 31, 1999 and September 30, 1999, total
amortization of deferred compensation was $1.5 million and $1.3 million,
respectively in connection with stock option grants and restricted founders'
shares.

AMORTIZATION OF INTANGIBLE ASSETS.

    Amortization of intangible assets for the three months ended December 31,
1999 was $0.7 million as a result of our acquisition of AimTV in December 1999.

INTEREST AND OTHER INCOME (EXPENSE), NET.

    Interest income consists of earnings on our cash and cash equivalents.
Interest expense consists primarily of interest expense on capital leases and
notes payable. Interest income, net, for the three months ended December 31,
1999 was $1.9 million, which represented an increase of $1.9 million from net
interest income of $0.1 million in the three months ended September 30, 1999.
The increase was primarily due to income earned on cash balances from the
proceeds of our initial public offering.

INCOME TAXES.

    As a result of operating losses and our inability to recognize a benefit
from our deferred tax assets, we have not recorded a benefit for income tax for
the three months ended December 31, 1999 or September 30, 1999.

             THREE MONTHS ENDED SEPTEMBER 30, 1999 COMPARED TO THE
                        THREE MONTHS ENDED JUNE 30, 1999

REVENUES.

    Revenues for the three months ended September 30, 1999 were $7.7 million,
which represented an increase of $4.0 million, or 107%, from $3.7 million for
the three months ended June 30, 1999. The increase was primarily attributable to
revenues generated from our start page agreement with LookSmart, as well as
increased sales of banner advertisements, primarily through our third-party
sales force. In particular, we generated approximately $3.0 million, or 39% of
our total revenues for the three months ended September 30, 1999, from our
agreement with LookSmart, which we entered into in April 1999. This amount
represented an increase of approximately $1.7 million from the $1.3 million of
revenues generated from LookSmart for the three months ended June 30, 1999,
which represented approximately 34% of our total revenues for that period. We
also generated approximately $2.3 million, or 29% of our total revenues for the
three months ended September 30, 1999, from banner advertisements sold through
Adsmart. This amount represented an increase of approximately $1.3 million from
the $1.0 million of revenues generated from Adsmart for the three months ended
June 30, 1999, which represented approximately 28% of our total revenues for
that period.

COST OF REVENUES.

    Cost of revenues for the three months ended September 30, 1999 was
$12.1 million, which represented an increase of $4.7 million, or 64%, from
$7.4 million for the three months ended June 30, 1999. The increase was
primarily attributable to increased telecommunications expense related to the
growth in our user base and increased depreciation related to our internal
network costs. During the September quarter, the Company's cost of
telecommunications services purchased averaged less than $0.30 per user hour.

                                       14
<PAGE>
SALES AND MARKETING.

    Sales and marketing expenses for the three months ended September 30, 1999
were $5.0 million, which represented an increase of $4.1 million, or 485%, from
$0.9 million for the three months ended June 30, 1999. The increase was
primarily due to increased levels of advertising and other marketing expenses
associated with the Company's nationwide consumer and advertiser branding
campaign. The increase was also attributable to the hiring of additional direct
sales force personnel.

PRODUCT DEVELOPMENT.

    Product development expenses for the three months ended September 30, 1999
were $0.8 million which represented an increase of $0.3 million, or 64%, from
$0.5 million for the three months ended June 30, 1999. The increase was
primarily due to the hiring of additional software engineers and professional
expenses.

GENERAL AND ADMINISTRATIVE.

    General and administrative expenses for the three months ended
September 30, 1999 were $3.5 million, which represented an increase of
$1.1 million, or 47%, from $2.4 million for the three months ended June 30,
1999. The increase was primarily due to the hiring of additional administrative
personnel and increased professional and consulting expenses.

STOCK-BASED COMPENSATION.

    For the three months ended September 30, 1999 and June 30, 1999, total
amortization of deferred compensation was $1.3 million and $0.9 million,
respectively, in connection with stock option grants and restricted founders'
shares.

INTEREST AND OTHER INCOME (EXPENSE), NET.

    Interest income consists of earnings on our cash and cash equivalents.
Interest expense consists primarily of interest expense on capital leases and
notes payable. Interest income, net, for the three months ended September 30,
1999 was $64,000, which represented a decrease of $27,000 from net interest
income of $91,000 in the three months ended June 30, 1999.

INCOME TAXES.

    As a result of operating losses and our inability to recognize a benefit
from our deferred tax assets, we have not recorded a benefit for income tax for
the three months ended September 30, 1999 or June 30, 1999.

      SIX MONTHS AND THREE MONTHS ENDED DECEMBER 31, 1999 COMPARED TO THE
              SIX MONTHS AND THREE MONTHS ENDED DECEMBER 31, 1998

    We began business operations in October 1998, and, as a result, operating
results for the period from July 1, 1998 through December 31, 1998 included only
$0.1 million in revenues, $1.1 million in cost of revenues, and $1.1 million in
expenses. Accordingly, the results for the first and second quarters of fiscal
1999 are not meaningful or material in comparison to the operating results for
the first and second quarters of fiscal 2000.

FACTORS AFFECTING OUR RESULTS OF OPERATIONS AND FINANCIAL CONDITION

    Our operating results may fluctuate substantially in the future as a result
of a variety of factors, many of which are outside of our control, including
those discussed elsewhere in this Form 10-Q. We may significantly increase our
operating expenses and capital expenditures for a variety of reasons including,

                                       15
<PAGE>
without limitation, to expand our sales and marketing efforts, promote the
NetZero brand, continue to enhance the features and functionality of The
ZeroPort, upgrade our internal network infrastructure, pursue new distribution
channels and hire new personnel across all levels of our organization.
Expenditures in each of these categories may vary significantly from quarter to
quarter. While some of our expenses are fixed in the short-term, we determine
our total operating expenses largely on the basis of anticipated growth in our
revenues. There are risks associated with the timing and achievement of revenue
targets due to a variety of factors, and there can be no assurance that revenues
will increase commensurately with expenses. We believe that our expenses will
significantly exceed our revenues for the foreseeable future. As a result of
these and other factors, our operating results may vary substantially from
quarter to quarter.

    In addition, seasonal trends could affect the revenues we generate. To the
extent that our revenues depend on the amount of usage by our users, any
seasonal fluctuations in Internet usage could affect our revenues during such
periods of fluctuation. We anticipate that user traffic levels will be impacted
by the summer and year-end vacation and holiday periods. Moreover, the rate at
which new users sign up for our services may be related to gifts or purchases of
personal computers, which typically increase during the fourth calendar quarter
as a result of the holiday season and may decline during other periods. As a
result, new user registration may be subject to seasonality. However, because
our operating history is limited, it is difficult for us to accurately predict
these trends and plan accordingly. Since our operating expenses are based on our
expectations of future revenues, it is possible that seasonal fluctuations could
materially and adversely affect our business, results of operations and
financial condition.

    A small number of customers have accounted for, and may in the future
account for, a significant portion of our revenues. For example, we derived
approximately 34% and 19% of our revenues for the three months ended
December 31, 1999 from agreements with LookSmart and Adsmart, respectively. Our
agreement with LookSmart was renewed in February 2000 and will extend through
February 15, 2001. Our agreement with AdSmart terminates on February 15, 2000.
While we are in discussions with AdSmart for an ongoing business relationship,
we do not anticipate that a new agreement with AdSmart, if any, would result in
revenues to us comparable to levels previously received from AdSmart. In
February 2000, we entered into a strategic alliance with 24/7 Media Inc.
Pursuant to this alliance, 24/7 Media will sell e-mail and banner advertising on
behalf of NetZero. There can be no assurance that such agreement will result in
material revenues to us. In February 2000, we also entered into an agreement
with idealab! pursuant to which idealab! will purchase $3 million of banner
advertisements and data from us over an approximately five-month period.
Idealab!, including its affiliates, is a major stockholder of NetZero and Bill
Gross, a director of NetZero, is also a director and major stockholder of
idealab! The termination of material agreements, as well as the timing of orders
under material agreements, may cause significant fluctuations in our quarterly
results. Our business, results of operations and financial condition will be
materially and adversely affected if we are unable either to renew our material
agreements or to replace such agreements with similar agreements with new
customers.

    Due to the foregoing factors, we believe that quarter to quarter comparisons
of operating results may not necessarily be a good indication of future
performance.

LIQUIDITY AND CAPITAL RESOURCES

    From inception of the business to September 1999 we financed our operations
primarily through the private placement of approximately $47 million in equity
securities. In September 1999 we completed an initial public offering of
11.5 million shares (including 1.5 million shares pursuant to the underwriters'
over-allotment option) of common stock at a price of $16 per share, resulting in
proceeds of $171.1 million net of underwriters' discount. At December 31, 1999
we had $152.1 million in cash and cash equivalents.

    Net cash used for operating activities was $39.8 million for the six months
ended December 31, 1999 and consisted primarily of operating losses, deposits to
guarantee future obligations and increases in

                                       16
<PAGE>
accounts receivable and other assets, partially offset by increases in accounts
payable and accrued expenses, depreciation and stock-based compensation.

    Net cash used for investing activities of $8.4 million for the six months
ended December 31, 1999 was primarily for server network equipment, purchased
software, office equipment and leasehold improvements. As our operations expand,
we anticipate significant additional expenditures.

    Net cash provided by financing activities was $176.3 million for the six
months ended December 31, 1999 and was principally attributable to the proceeds
from our initial public offering.

    We expect to continue to incur significant capital expenditures in the
future, including additions and enhancements to our server and network
infrastructure, software licenses and furniture, fixtures and equipment. The
actual amount of capital expenditures will depend on the rate of growth in our
user base, which is difficult to predict and which could change dramatically
over time. Technological advances may also require us to make capital
expenditures to develop or acquire new equipment or technology. We intend to use
a combination of our cash and capital lease financing to fund our capital
expenditures in a manner which minimizes our cost of capital. However, we cannot
assure you that we will be able to obtain lease financing on favorable terms, if
at all. In the event we cannot, we would be required to use a greater portion of
our cash to fund our capital expenditures.

    We currently anticipate that our existing cash and cash equivalents and the
availability of lease financing will be sufficient to fund our operating
activities, capital expenditures and other obligations for at least the next
12 months. However, we may need to raise additional capital in order to fund
more rapid expansion, to expand our marketing activities, to develop new or
enhance existing services or products, to respond to competitive pressures or to
acquire complementary services, businesses or technologies. If we are not
successful in generating sufficient cash flow from operations, we may need to
raise additional capital through public or private financings, strategic
relationships or other arrangements. This additional funding, if needed, might
not be available on terms acceptable to us, or at all. Our failure to raise
sufficient capital when needed could have a material adverse effect on our
business, results of operations and financial condition. If additional funds
were raised through the issuance of equity securities, the percentage of stock
owned by our then-current stockholders would be reduced. Furthermore, such
equity securities might have rights, preferences or privileges senior to those
of our common stock.

YEAR 2000

    Many existing computer systems and software are coded to accept only two
digit entries in the date code field and cannot distinguish 21st century dates
from 20th century dates. If not corrected, various problems may arise from the
improper processing of dates and date-sensitive calculations by computers and
other machinery in Year 2000. These problems include system failures or
miscalculations causing disruptions of operations, including, among other
things, a temporary inability to process transactions, send invoices or engage
in similar business activities. As a result, many companies' software and
computer systems may need to be upgraded or replaced to comply with these "Year
2000" requirements.

    To date we have not experienced any material issues associated with the Year
2000 problem. We have completed our formal assessment of the impact that the
Year 2000 problem may have on our existing operations and believe the following
four distinct areas of our existing operations may be affected by the Year 2000
problem:

    INTERNALLY DEVELOPED SOFTWARE.  We have internally developed a substantial
portion of the systems and software that we use to operate and monitor our
online operations. We designed and developed these systems and software to be
Year 2000 compliant. Based upon our assessment and testing to date, we believe
that our internally developed systems and software are Year 2000 compliant.

    THIRD-PARTY HARDWARE AND SOFTWARE SUPPLIERS.  We use third-party equipment
and software and, as a result, our ability to address Year 2000 issues is to a
large extent dependent upon the Year 2000 readiness

                                       17
<PAGE>
of these third parties' hardware and software products. These products include
servers manufactured by Sun Microsystems, network equipment manufactured by
Cisco, database management, financial application and other software licensed
from Oracle, our advertisement server software from NetGravity, data storage
equipment from EMC, and JAVA, a programming language licensed from Sun
Microsystems that we use to implement most of our internally developed software.
We have reviewed documentation on Year 2000 compliance prepared by the third
parties from whom we have purchased hardware and software products. Based upon
our review of such documentation and the fact that we either purchased the most
current product versions available from these third parties or installed the
latest patches or upgrades available, we believe these applications are Year
2000 compliant.

    TELECOMMUNICATIONS CARRIERS.  We are entirely dependent on our
telecommunications carriers to provide access between their networks and our
network. We have obtained Year 2000 readiness disclosure statements from these
carriers which confirmed that their systems are Year 2000 compliant or that they
were in the process of becoming Year 2000 compliant. We expect to resolve any
significant Year 2000 issues with our telecommunications carriers; however, in
the event that Year 2000 problems materialize, we may have to seek alternate
suppliers of telecommunications services.

    NON-IT SYSTEMS.  Our non-information technology systems, such as heating and
air conditioning, security systems and other embedded technology, may also be
subject to Year 2000 risks. We have obtained Year 2000 compliance statements
from the manufacturers of our non-IT systems, all of which were placed in
service in 1999. Based on our assessment to date, we believe that these systems
are Year 2000 compliant.

    In addition, we are assessing and testing any new systems that we add to our
operations for Year 2000 compliance.

    THE COSTS OF ADDRESSING OUR YEAR 2000 ISSUES.  To date, we have not incurred
any material expense in connection with identifying, evaluating and remediating
Year 2000 compliance issues. We believe that substantially all of the expense
that we will incur in the future relating to the Year 2000 problem will be costs
associated with time spent by our employees in the evaluation process and Year
2000 compliance in general. We do not expect the total costs of our Year 2000
compliance efforts to be material. However, if these costs are substantially
higher than we anticipate, they could have a material adverse effect on our
business.

    THE RISKS ASSOCIATED WITH OUR YEAR 2000 ISSUES.  If Year 2000 issues prevent
our users from accessing the Internet, our business and operations will suffer.
Any failure of our systems and our communications infrastructure with respect to
the Year 2000 problem could result in:

    - increased user turnover and corresponding loss of advertising revenues
      resulting from decreased impressions; or

    - increased allocation of our resources to address Year 2000 problems
      without additional revenues commensurate with such dedication of
      resources.

    OUR CONTINGENCY PLANS.  We completed our contingency plans with respect to
Year 2000 risks.

                                       18
<PAGE>
                                  RISK FACTORS
                  WE FACE RISKS ASSOCIATED WITH OUR OPERATIONS

WE CANNOT PREDICT OUR SUCCESS BECAUSE OUR FREE INTERNET SERVICE PROVIDER
  BUSINESS MODEL IS UNPROVEN, AND WE HAVE OPERATED OUR BUSINESS FOR ONLY A SHORT
  PERIOD OF TIME.

    Our business model is unproven and a number of other businesses offering
free Internet access have failed. Since we only began offering Internet access
in October 1998, we have a limited operating history, which makes it difficult
to evaluate our performance.

    Our business model, unlike traditional Internet service providers, does not
have a measurable and predictable revenue stream from user access fees. If we
are not able to successfully address these risks, we will not be able to grow
our business, compete effectively or achieve profitability.

IF WE FAIL TO GROW OUR USER BASE, WE MAY NOT BE ABLE TO GENERATE REVENUES,
  DECREASE PER-USER TELECOMMUNICATIONS COSTS OR IMPLEMENT OUR STRATEGY.

    If we are unable to grow our user base, we may not be able to generate
revenues, decrease per-user telecommunications costs or implement our strategy.
We intend to generate new users through other distribution channels, such as
television, radio and print media advertising, direct marketing campaigns, and
bundling, co-branding and retail distribution arrangements. However, we have
limited experience with marketing our service through these channels. If these
distribution channels prove more costly or less effective than anticipated, it
could adversely impact our ability to grow.

    We would also be unable to grow our user base if a significant number of our
current registered users stopped using our service. There are a variety of
reasons why users would discontinue using our service, including:

    - users may decide they do not like the always-present nature of The
      ZeroPort;

    - users may not like having their online activities tracked;

    - reliability issues, which we have experienced in the past and may
      experience in the future, may cause user dissatisfaction; and

    - our limited user support may frustrate users who have difficulty using our
      service.

    There is no assurance that we will be able to successfully address these
issues and retain our existing user base.

OUR ADVERTISING REVENUES WILL SUFFER IF WE ARE UNABLE TO DEMONSTRATE THAT OUR
  REGISTERED USERS ARE ACTIVELY USING OUR SERVICE.

    If we are not able to demonstrate to our advertisers that our registered
users are actively using our service, advertisers may choose not to advertise
with us and our advertising revenues could be materially and adversely affected.
While approximately 2.96 million users had registered for our service as of
December 31, 1999, approximately 1.45 million had used our service during the
month of December. We believe that a number of our users have Internet access
accounts with our competitors. As a result, these users may not use NetZero as
their primary Internet service provider. Also, some new users use the Internet
only as a novelty and do not become consistent users of Internet services and,
therefore, may be less likely to continue using our service.

                                       19
<PAGE>
IF WE FAIL TO GENERATE SUFFICIENT ADVERTISING REVENUES, WE MAY NOT BE ABLE TO
  SUPPORT OUR OPERATIONS.

    Since we do not charge our users any fees for our Internet access and e-mail
services, we depend primarily on our ability to generate advertising revenues.
Accordingly, if we fail to generate sufficient advertising revenues, we may not
be able to support our operations. We generate revenues from a variety of
different arrangements including sales of targeted and untargeted banner
advertising, sponsorships, performance-based arrangements and referrals to third
party Web-sites. We have limited experience marketing and pricing these types of
arrangements, and have limited actual experience with respect to the performance
of such arrangements. As such, we do not know if we are appropriately pricing,
marketing or structuring these arrangements, or whether we will perform under
these arrangements to the satisfaction of the other parties. Our failure to
appropriately price, market or structure these arrangements could impact our
ability to enter into and perform under these arrangements, or to renew these
arrangements on similar or acceptable terms. In addition, the success of some of
these arrangements will depend on our ability to effectively target users based
on demographic and other information. We may encounter technical and other
limitations on this ability, including problems associated with the accuracy of
the information provided by our users, which we do not corroborate. In light of
these factors, there can be no assurance that we will be able to attract
sufficient advertising revenues to support our operations.

    In addition, competition for Internet-based advertising revenues is intense
and the amount of available standard banner advertising space on the Internet is
increasing at a significant rate. These factors are causing Internet advertising
rates to decline, and it is possible that rates will continue to decline in the
future. Also, our growth in users has resulted in, and in the future may result
in, our advertising inventory growing faster than our ability to sell the
inventory at reasonable rates.

    Many of our advertising competitors have longer operating histories, greater
name recognition, larger user bases, significantly greater financial, technical,
sales and marketing resources and more established relationships with
advertisers than we do. These advantages may allow such competitors to respond
more quickly than we can to new or emerging technologies and changes in
advertiser requirements. They may also be able to devote greater resources than
we can to develop, promote and sell their products and services. Such
competitors may also engage in more extensive research and development,
undertake more far-reaching marketing campaigns, adopt more aggressive pricing
policies and make more attractive offers to existing and potential employees,
strategic partners, advertisers and Web publishers. In addition, current and
potential competitors have established or may establish cooperative
relationships among themselves or with third parties to increase the ability of
their products or services to address the needs of our prospective customers. We
must also compete with television, radio, cable and print media for a share of
advertisers' total advertising budgets. Advertisers may be reluctant to devote a
significant portion of their advertising budget to Internet advertising if they
perceive the Internet to be a limited or ineffective advertising medium.

WE MAY NOT BE ABLE TO PROVIDE INTERNET ACCESS FOR OUR USERS IF OUR
  TELECOMMUNICATIONS CARRIERS RAISE THEIR RATES OR IF THEY DISCONTINUE DOING
  BUSINESS WITH US.

    Our business substantially depends on the capacity, affordability,
reliability and security of our telecommunications networks. Only a small number
of telecommunications providers offer the network services we require. There has
been significant consolidation in the telecommunications industry, and there is
a significant risk that further consolidation could make us reliant on an even
smaller number of providers. Most of our telecommunications services are
provided pursuant to short-term agreements that the providers can terminate or
elect not to renew. As a result, any or all of our current telecommunications
service providers could decide not to provide us with service at rates
acceptable to us, or at all, in which event, we may not be able to provide
Internet access to our users.

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<PAGE>
WE MAY LOSE OUR USERS IF OUR TELECOMMUNICATIONS PROVIDERS DELIVER UNACCEPTABLE
  SERVICE QUALITY.

    If our third-party telecommunications service providers deliver unacceptable
service, the quality of our Internet access service would suffer. In this event,
we would likely lose users who are dissatisfied with our service. Since we do
not have direct control over our telecommunications carriers' network
reliability and the quality of their service, there can be no assurance that we
will be able to provide consistently reliable Internet access for our users.

IF TELECOMMUNICATIONS PRICES INCREASE, OUR MARGINS WOULD BE ADVERSELY IMPACTED.

    Our margins are highly sensitive to variations in prices for the
telecommunications services we purchase. Our business could be harmed if minimum
connection charges increase or become more prevalent. In addition, the
availability and pricing of telecommunications services varies geographically,
and we may not be able to obtain new or substitute telecommunications services
in certain geographic areas on commercially reasonable terms, if at all. There
can be no assurance that our telecommunications providers will continue to
provide their services on commercially acceptable price terms, or that
alternative services will be available on similar terms.

OUR ABILITY TO SERVE ADVERTISEMENTS ON THE ZEROPORT COULD BE SEVERELY LIMITED IF
  THE SOFTWARE WE LICENSE FROM NETGRAVITY FAILS TO PERFORM OR IF WE ARE NOT ABLE
  TO RENEW OUR LICENSE.

    All of our advertisements are served using software licensed from
NetGravity. While there is other software available, it would substantially
disrupt our business to switch to another provider. As such, we are reliant on
NetGravity and its software. Our agreement with NetGravity expires in
June 2001; however we have an option to renew the agreement for an additional
two year term upon initial expiration. If NetGravity's software fails to perform
as expected, or if we are not able to renew such agreement or license or
internally develop similar software in the future, we may not be able to
effectively display advertisements to our users. In this event, our ability to
generate advertising revenues would be severely limited. In October 1999,
NetGravity was acquired by Double Click, an Internet advertising provider. Since
our agreement with NetGravity does not expire until June 2001 and we have an
option to renew for an additional two year term upon initial expiration, we do
not believe the acquisition will have a material effect on our contractual
rights with NetGravity.

OUR STOCK PRICE COULD FALL AS A RESULT OF FUTURE LOSSES AND NEGATIVE CASH FLOW.

    We have a significant accumulated deficit. We expect that our losses and
negative cash flow will increase for the foreseeable future as we continue to
expand our operations. Our ability to achieve profitability or positive cash
flow depends upon a number of factors, including our ability to increase revenue
and reduce per-user costs. Although our revenues have grown in the most recent
three months, we cannot be certain that we will be able to sustain these growth
rates or that we will obtain sufficient revenues to achieve profitability or
positive cash flow. If we do achieve profitability, we cannot be certain that we
can sustain or increase profitability on a quarterly or annual basis in the
future. If we fail to do so, the market price for our common stock could suffer.

OUR MARKET SHARE AND REVENUES WOULD SUFFER IF WE ARE NOT ABLE TO COMPETE
  EFFECTIVELY FOR USERS WITH ESTABLISHED, AND NEW PROVIDERS OF, INTERNET ACCESS
  SERVICES.

EXISTING COMPETITORS.

    We currently compete or expect to compete for users with the following types
of companies that provide access services:

    - established online service and content providers, such as America Online
      and The Microsoft Network;

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<PAGE>
    - independent national Internet service providers, such as EarthLink, which
      has recently merged with MindSpring, and Prodigy;

    - national long-distance carriers, such as AT&T, GTE and MCI WorldCom;

    - local telephone companies and regional Bell operating companies, such as
      Pacific Bell;

    - numerous regional and local commercial Internet service providers;

    - computer hardware and software and other technology companies, such as IBM
      and Microsoft;

    - cable operators and online cable services, such as Excite@Home;

    - Internet portals and search engines such as Yahoo!;

    - other free Internet service providers; and

    - nonprofit or educational Internet service providers.

We expect that competition for users will continue to intensify for the
foreseeable future. Increased competition could result in additional sales and
marketing expenses and user-acquisition costs and could also result in increased
user turnover and decreased advertising revenues. Since we do not charge our
users membership fees, we may not be able to offset the effects of these
increased costs, and we may not have the resources to continue to compete
successfully. The ability of our competitors to acquire other Internet service
providers or to enter into strategic alliances or joint ventures could also put
us at a significant competitive disadvantage.

NEW COMPETITORS.

    In addition, we believe that new competitors for Internet users, including
major computer manufacturers and software, media and telecommunications
companies, will continue to enter the Internet access market. Existing
competitors may take steps such as reducing their subscriber fees, offering
promotions for access services or bundling free access services with other
product offerings. For example, AltaVista and Excite, leading portals and search
engines, recently began offering free Internet access solutions to strengthen
their relationships with users, and both Microsoft and CompuServe have recently
partnered with personal computer makers and consumer electronics retailers to
offer consumers up to $400 of rebates on computer equipment when the consumer
signs up for three years of their Internet access services. New entrants have
announced Internet access models similar to ours, and the implementation of
similar models by new entrants or existing competitors could limit the value of
our consumer proposition. As awareness of the Internet grows, existing
competitors are likely to further increase their emphasis on their Internet
access services, resulting in even greater competition for us.

TELECOMMUNICATIONS SERVICES.

    In addition, telecommunications companies with far greater resources,
distribution channels and brand awareness offer or have announced that they will
offer, their own Internet access services to users. Since these companies have
their own telecommunications network infrastructure, they have lower
communications costs than we do. These advantages reduce the overall cost of
Internet access for such companies and may significantly increase competitive
pressures on us. In addition, each of our telecommunications providers supplies
network access to some of our competitors, and could choose to grant those
competitors preferential network access, potentially limiting our users' ability
to access the Internet. If our telecommunications service providers were to
decrease the levels of service or access provided to us, or if they were to
terminate their relationships with us for competitive or other reasons, and we
were not able to develop alternate sources of supply, we would not be able to
provide Internet access to our customers, which could ultimately result in a
significant loss of users and revenues.

                                       22
<PAGE>
BROADBAND PROVIDERS.

    We also face competition from companies that provide broadband Internet
access, including local and long-distance telephone companies, cable television
companies, electric utility companies, wireless communications companies and
other Internet service providers. Most of our service is offered via dial-up
modems which are generally limited to access speeds of up to 56 kbps. Broadband
technologies enable users to transmit and receive print, video, voice and data
in digital form at significantly faster access speeds. We may have to develop
new technologies or add broadband access services to remain competitive which
could require substantial time and expense. We cannot be certain that we will
succeed in adapting our Internet access service business to compete effectively
with these technologies.

    The telephone, cable and other companies that own broadband networks may
prevent us from offering broadband Internet access through the wire and cable
networks that they own. Our ability to compete with telephone and cable
television companies that are able to support broadband transmission may depend
on future regulation to guarantee open access to their broadband networks.
However, in January 1999, the Federal Communications Commission declined to take
any action to mandate or otherwise regulate access by Internet service providers
to broadband cable facilities at this time. We do not know whether local, state
or federal regulatory agencies will take any initiatives to implement this type
of regulation, and whether they will be successful in establishing their
authority to do so.

    In addition to competing directly in the Internet access market, both cable
and telephone companies are also aligning themselves with Internet service
providers who would receive preferential or exclusive use of broadband local
connections to users. If broadband Internet access becomes the preferred mode by
which users access the Internet and we are unable to gain access to broadband
networks on reasonable terms, our ability to compete could be materially and
adversely affected.

OUR REVENUES WOULD SIGNIFICANTLY DECREASE IF WE LOSE KEY CUSTOMERS.

    A small number of customers have accounted for, and may in the future
account for, a significant portion of our revenues. For example, we derived
approximately 34% of our revenues for the three months ended December 31, 1999
from an agreement with LookSmart. We also derived approximately 19% of our
revenues for the three months ended December 31, 1999 from an agreement with
Adsmart. Our agreement with LookSmart was renewed in February 2000 and will
expire on February 15, 2001. Our agreement with AdSmart terminates on February
15, 2000. While we are in discussions with AdSmart for an ongoing business
relationship, we do not anticipate that a new agreement with AdSmart, if any,
would result in revenues to us comparable to levels previously received from
AdSmart. In February 2000, we entered into a strategic alliance with 24/7 Media
Inc. Pursuant to this alliance, 24/7 Media will sell e-mail and banner
advertising on behalf of NetZero. There can be no assurance that such agreement
will result in material revenues to us. The termination of material agreements,
as well as the timing of orders under material agreements, may cause significant
fluctuations in our quarterly results. Our business, results of operations and
financial condition will be materially and adversely affected if we are unable
either to renew our material agreements or to replace such agreements with
similar agreements with new customers.

OUR REPUTATION AND ABILITY TO GENERATE REVENUES WILL BE HARMED IF USER DEMAND
  FOR OUR SERVICE EXCEEDS OUR TELECOMMUNICATIONS AND SERVER CAPACITY.

    We may from time to time experience increases in our telecommunications
usage which exceed our then-available telecommunications capacity and the
capacity of our internal servers. As a result, users may be unable to register
or log on to our service, may experience a general slow-down in their Internet
access or may be disconnected from their sessions. Excessive user demand could
also result in system failures of our internal server networks, which would
prevent us from generating advertising revenues. Inaccessibility, interruptions
or other limitations on the ability to access our service due to excessive user
demand, or any

                                       23
<PAGE>
failure of our servers to handle user traffic, would have a material adverse
effect on our reputation and our revenues.

WE WILL NOT BE ABLE TO SUPPORT INCREASED NUMBERS OF USERS IF WE ARE UNABLE TO
  ENHANCE OUR INTERNAL NETWORK INFRASTRUCTURE.

    Our internal network infrastructure is composed of a complex system of
application, database, advertisement and e-mail servers. Service interruptions
originating within our internal network have occurred in the past and may occur
in the future, especially when usage exceeds capacity. We will need to invest in
substantial financial, operational, and management resources to enhance our
systems, particularly our database servers and storage capabilities, to handle a
large number of users. We cannot be certain that we will be able to accomplish
this on a timely basis and at a commercially reasonable cost, or at all. If we
fail to do so, we will be unable to grow our business.

IF WE FAIL TO MANAGE OUR TELECOMMUNICATIONS CAPACITY, OUR SERVICE LEVELS MAY
  SUFFER OR WE MAY EXPERIENCE INCREASED PER-USER COSTS.

    We will have to accurately anticipate our future telecommunications capacity
needs within lead-time requirements. If we fail to procure sufficient quantities
of telecommunications products and services, we may be unable to provide our
current and future users with acceptable service levels. We also run the risk of
purchasing excessive amounts of telecommunications products and services based
on incorrect projections regarding increased usage. In that event, we would be
required to bear the costs of excess telecommunications capacity without
commensurate increases in revenues. There can be no assurance that we will be
able to effectively manage these and other aspects of our business. Our failure
to do so would likely have a material adverse effect on our business, results of
operations and financial condition.

WE MAY NOT BE ABLE TO GROW OUR USER BASE IF WE ARE UNSUCCESSFUL IN ESTABLISHING
  AND MAINTAINING THE NETZERO BRAND.

    If we are unsuccessful in establishing or maintaining the NetZero brand, we
may not be able to grow our user base. We believe that establishing and
maintaining the NetZero brand is critical to retain and expand our user base.
Promotion of the NetZero brand will depend on our success in providing
high-quality Internet products and services. However, such success will depend,
in part, on the services, products and efforts of third parties, over which we
have little or no control. For instance, if our third party telecommunications
service providers fail to provide quality service, our users' ability to access
the Internet may be interrupted, which may adversely affect the NetZero brand.
If our users and advertisers do not perceive our existing products and services
as high quality, or if we introduce new products or services or enter into new
business ventures that are not favorably received by our users and advertisers,
then we may be unsuccessful in building brand recognition and brand loyalty in
the marketplace. In addition, we may also need to devote substantial resources
to create and maintain a distinct brand loyalty among our users and to promote
and maintain the NetZero brand in a very competitive market. If we incur
excessive expenses in promoting and maintaining our brand, our financial results
could be seriously harmed.

WE MAY NOT BE ABLE TO COMPETE EFFECTIVELY IF WE ARE NOT ABLE TO RESPOND TO
  CHANGING INDUSTRY STANDARDS.

    We may not be able to compete effectively if we are not able to adapt to
changes in technology and industry standards, and to develop and introduce new
and enhanced products and service offerings. We believe that our ability to
compete successfully will also depend upon the continued compatibility of our
services with products offered by various vendors. Although we intend to support
emerging standards in the market for Internet access, we may not be able to
conform our technology and equipment to support these new standards in a timely
fashion. For instance, we have been notified that Sun Microsystems is

                                       24
<PAGE>
upgrading its JAVA language and that the new version will require more memory to
implement. Our software uses the JAVA language extensively and we will have to
modify our resources accordingly to accommodate the new version. There can be no
assurance that we will be able to make such modifications, or any other
modifications which may be required to adapt to new or changing standards, in a
cost-effective and timely manner, or at all.

WE MAY NOT BE ABLE TO DEVELOP NEW PRODUCT OR SERVICE OFFERINGS IF WE ARE UNABLE
  TO OBTAIN NEEDED TECHNOLOGY.

    We rely upon third parties to help us develop technologies that enhance our
current product and service offerings. If our relationships with these third
parties are impaired or terminated, then we would have to find other developers
on a timely basis or develop technology completely on our own. We cannot predict
whether we will be able to obtain the third-party technology necessary for
continued development and introduction of new and enhanced products and
services.

CONSUMERS MAY DECIDE NOT TO USE OUR SERVICE IF OUR TECHNOLOGY AND SERVICES
  BECOME OBSOLETE.

    Others may develop services or technologies that render our services or
technology noncompetitive or obsolete. For instance, a number of companies are
offering broadband and other high speed Internet access services, which allow
users to access the Internet at much faster speeds than the access services we
currently provide. Our ability to remain technologically competitive may require
substantial expenditures and lead time. If we are unable to respond in a timely
manner to technological advances, we may not be able to compete effectively for
users, which could cause our revenues to decrease.

IF OUR SOFTWARE OR HARDWARE CONTAIN ERRORS, OUR BUSINESS COULD BE SERIOUSLY
  HARMED.

    The software and hardware used to operate and provide our services is
complex and, accordingly, may contain undetected errors or failures. We have in
the past, and may in the future, encounter errors in the software or hardware
used to operate and provide our services. This has resulted in, and may in the
future result in, a number of adverse consequences, including:

    - users being disconnected from our service or being unable to access our
      service;

    - loss of data or revenue;

    - injury to reputation; and

    - diversion of development resources.

    We have experienced some technical and customer support issues associated
with our products and software releases and we cannot assure you that we will
not experience additional problems in the future.

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<PAGE>
WE MAY NOT BE ABLE TO COMPETE EFFECTIVELY IF WE ARE NOT ABLE TO PROTECT OUR
  PROPRIETARY RIGHTS.

    If we are not able to protect our proprietary rights, we may not be able to
compete effectively. We principally rely upon copyright, trade secret, and
contract laws to protect our proprietary technology. We cannot be certain that
we have taken adequate steps to prevent misappropriation of our technology or
that our competitors will not independently develop technologies that are
substantially equivalent or superior to our technology.

    In addition, since we provide our Internet access software for free, we are
extremely susceptible to various forms of unauthorized use of our software. For
instance, we have experienced, and expect to continue to experience, numerous
instances of third parties selling unauthorized copies of our software. Others
have attempted to charge fees for installing our software without our
permission. These actions could adversely affect our brand name.

WE MAY INCUR SUBSTANTIAL COSTS AND DIVERSION OF OUR MANAGEMENT'S RESOURCES IF WE
  INFRINGE UPON THE PROPRIETARY RIGHTS OF OTHERS.

    We have permission and, in some cases, licenses from each developer of the
software that we use in our software. Although we do not believe that the
software or the trademarks we use or any of the other elements of our business
infringe on the proprietary rights of any third parties, third parties may
assert claims against us for infringement of their proprietary rights and these
claims may be successful. In addition, a number of third-party owners of patents
have claimed to hold patents that cover various forms of online transactions or
online technology. As with other online service providers, patent claims could
be asserted against us based upon our services or technologies.

    We could incur substantial costs and diversion of management resources in
the defense of any claims relating to proprietary rights. Parties making these
claims could secure a judgment awarding substantial damages as well as
injunctive or other equitable relief that could effectively block our ability to
license our products in the United States or abroad. If a third party asserts a
claim relating to proprietary technology or information against us, we may seek
licenses to the intellectual property from the third party. We cannot be
certain, however, that third parties will extend licenses to us on commercially
reasonable terms, or at all. If we fail to obtain the necessary licenses or
other rights, it could materially and adversely affect our ability to operate
our business.

OUR SERVICE COULD BE DISRUPTED BY A SECURITY BREACH, VIRUS OR INAPPROPRIATE USE
  BY INTERNET USERS.

    The future success of our business will depend on the security of our
network and, in part, on the security of the network infrastructures of our
third-party telecommunications service providers, over which we have no control.
Computer viruses or problems caused by our users or other third parties, such as
the sending of excessive volumes of unsolicited bulk e-mail or "spam", could
lead to interruptions, delays, or cessation in service to our users. In
addition, the sending of "spam" through our network could result in third
parties asserting claims against us. There can be no assurance that we would
prevail in such claims and our failure to do so could result in large judgments
against us. Users or other third parties could also potentially jeopardize the
security of confidential information stored in our computer systems or our
users' computer systems by their inappropriate use of the Internet, including
breaking into our computer network, which could cause losses to us or our users.
Users or third parties may also potentially expose us to liability by "identity
theft", or posing as another NetZero user. Unauthorized access by current and
former employees or others could also potentially jeopardize the security of
confidential information stored in our computer systems and those of our users.

    We expect that our users will increasingly use the Internet for commercial
transactions in the future. Any network malfunction or security breach could
cause these transactions to be delayed, not completed at all, or completed with
compromised security. Users or others may assert claims of liability against us
as a result of any failure by us to prevent these network malfunctions and
security breaches, and may deter

                                       26
<PAGE>
others from using our services, which could cause our business prospects to
suffer. Although we intend to continue using industry-standard security
measures, such measures have been circumvented in the past, and we cannot assure
you that these measures will not be circumvented in the future. We also cannot
assure you that the security measures of our third-party network providers will
be adequate. In addition, to alleviate problems caused by computer viruses or
other inappropriate uses or security breaches, we may have to interrupt, delay,
or temporarily cease service to our users, which could have a material adverse
effect on our revenues and could also result in increased user turnover.

OUR REVENUES COULD BE ADVERSELY AFFECTED IF PROGRAMS TO DISABLE THE ZEROPORT
  BECOME PREVALENT.

    Various software programs have been developed that specifically target The
ZeroPort to disable our ability to deliver advertisements to a user. These
programs attempt to blank out, or block, banner advertisements on The ZeroPort
or completely delete The ZeroPort from users' computer screens. To date, such
programs have not interrupted our operations or caused us to fail to meet the
terms of our advertising agreements. While we believe we have been able to limit
the effectiveness of such attempts, there can be no assurance that we will be
able to continue to do so in the future. Widespread adoption of this type of
software would seriously damage our ability to operate our business and generate
revenues.

WE MAY NOT BE ABLE TO EXPAND OUR OPERATIONS IF WE ARE NOT ABLE TO OBTAIN
  ADDITIONAL EQUIPMENT FROM THIRD-PARTY HARDWARE SUPPLIERS.

    The expansion of our network infrastructure and Internet services in general
is placing, and will continue to place, a significant demand on our suppliers.
From time to time, we have experienced delayed delivery from suppliers of
modems, servers, and other equipment. We may be unable to implement our planned
expansion and our users may be unable to connect to our network if we are not
able to obtain additional equipment in a timely manner and on commercially
acceptable terms. In particular, our servers are a critical part of our
infrastructure and we will need additional servers to expand our operations. We
currently purchase, and expect to continue to purchase, all of our servers from
Sun Microsystems. Since we do not have an agreement with Sun Microsystems
regarding future server purchases, we have no assurance that Sun Microsystems
will continue to supply servers to us on commercially acceptable terms, if at
all.

WE MAY EXPERIENCE LOSS OF DATA, DISRUPTION OF OPERATIONS, OR ERRONEOUS
  OVERCHARGES OR UNDERCHARGES TO ADVERTISING CUSTOMERS IF THE ORACLE SOFTWARE WE
  USE TO RUN OUR OPERATIONS FAILS TO OPERATE CORRECTLY.

    Virtually every aspect of our operations, including finance, billing,
accounting, storage and retrieval of user data, and advertisement tracking, uses
or interfaces with a centralized software system provided by Oracle. We have
only limited experience with the operation of this system. Difficulty with the
operation of, or errors, defects or malfunctions in the operation of, this
system, could result in loss of data, erroneous overcharges or undercharges to
advertising customers or disruption of operations.

FAILURE TO ACHIEVE YEAR 2000 COMPLIANCE COULD CAUSE SUBSTANTIAL DISRUPTION TO
  OUR BUSINESS AND RESULT IN LOSS OF USERS.

    To date we have not experienced any material issues associated with the Year
2000 problem. Our failure, or the failure of third parties on which we rely, to
have adequately addressed Year 2000 readiness issues could result in an
interruption, or a failure, of our normal business activities or operations.
Presently, we believe that the primary risks that we face with regard to the
Year 2000 are those arising from third-party services or products. In
particular, we depend heavily on third party vendors to provide both network
services and equipment. A significant Year 2000-related disruption of these
services or equipment could cause our users and advertisers to consider seeking
alternate providers or advertising space, or cause an unmanageable burden on
user service and technical support. This, in turn, could materially and
adversely affect our revenues and result in increased user turnover.
Furthermore, if the normal operation of the Internet is disrupted by the Year
2000 issue, or if a large portion of our users and advertisers are unable to

                                       27
<PAGE>
access the Internet due to Year 2000-related issues in connection with their own
systems, users would not be able to use our service and our revenues would be
materially and adversely affected.

    In addition, the failure of our internal computer systems or of third-party
equipment or software to operate without Year 2000 complications could require
us to incur significant unanticipated expenses to remedy any problems and could
expose us to claims for losses incurred by our users due to such Year 2000
complications. The defense of any such claims, with or without merit, could
require us to incur substantial costs and would divert management's time and
attention, which could have a material adverse effect on our ability to operate
our business.

    It is possible that any of the Year 2000 factors listed above could result
in an extended interruption of our ability to provide services to our users and
to fulfill commitments to advertisers. A complete and extended interruption
would be our worst possible scenario. The longer the interruption, the more
likely our business would be adversely affected. Moreover, if the factors giving
rise to the interruption are particular to us, such as the failure of our
internal network infrastructure, we could lose a significant number of users and
advertisers to our competitors. This would not only adversely impact us
financially, but could also significantly impact our reputation and our
prospects. Please refer to our discussion in "Management's Discussion and
Analysis of Financial Condition and Results of Operations Year 2000" for further
information with respect to Year 2000 related issues.

OUR ABILITY TO OPERATE OUR BUSINESS COULD BE SERIOUSLY HARMED IF WE LOSE, OR
  FAIL TO ASSIMILATE, MEMBERS OF OUR SENIOR MANAGEMENT TEAM AND OTHER KEY
  EMPLOYEES.

    Most of our senior management team has only recently joined us. For example,
Mark Goldston, our Chief Executive Officer, joined us in March 1999, Charles
Hilliard, our Chief Financial Officer, joined us in April 1999, and Perri
Procida, our Senior Vice President, Sales, joined us in May 1999. There can be
no assurance that we will successfully assimilate our recently hired officers or
that we can successfully locate, hire, assimilate and retain qualified key
management personnel. Our business is largely dependent on the personal efforts
and abilities of our senior management and other key personnel. Any of our
officers or employees can terminate his or her employment relationship at any
time. The loss of these key employees or our inability to attract or retain
other qualified employees could seriously harm our business and prospects. We do
not carry key man life insurance on any of our employees.

WE WILL NOT BE ABLE TO GROW OUR BUSINESS IF WE ARE NOT ABLE TO HIRE ADDITIONAL
  PERSONNEL.

    Our future success also depends on our ability to attract, retain and
motivate highly skilled technical, managerial, editorial, merchandising, sales,
marketing and user service personnel. We plan to hire additional personnel in
all areas of our business. Competition for such personnel is intense,
particularly in the Internet and high technology industry. As a result, we may
be unable to successfully attract, assimilate or retain qualified personnel. We
may also be unable to retain the employees we currently employ or attract
additional technical personnel. If we fail to retain and attract the necessary
personnel, we may not be able to operate and grow our business.

OUR BUSINESS COULD BE SHUT DOWN OR SEVERELY IMPACTED IF A NATURAL DISASTER
  OCCURS.

    Our operations and services depend on the extent to which our computer
equipment and the telecommunications infrastructure of our third-party network
providers is protected against damage from fire, earthquakes, power loss,
telecommunications failures, and similar events. A significant portion of our
computer equipment, including critical equipment dedicated to our Internet
access services, is located at our headquarters and at a facility in Los
Angeles, California. Despite precautions taken by us and our third-party network
providers, over which we have no control, a natural disaster or other
unanticipated problems at our headquarters or at a network hub, or within a
third-party network provider's network, could cause interruptions in the
services that we provide. For example, if an earthquake damages

                                       28
<PAGE>
equipment at our network operations center, we may have no means of replacing
this equipment on a timely basis or at all and our service would be shut down.
We do not currently maintain fully redundant or back-up Internet services,
backbone facilities or other fully redundant computing and telecommunications
facilities. Furthermore, we do not currently have any business disruption
insurance. Any prolonged disruption of our services due to system failure could
result in user turnover and decreased revenues.

IF WE ARE UNABLE TO SUCCESSFULLY INTEGRATE FUTURE ACQUISITIONS INTO OUR
  OPERATIONS, THEN OUR RESULTS AND FINANCIAL CONDITION MAY BE ADVERSELY
  AFFECTED.

    We may make acquisitions or undertake other business combinations that can
complement our current or planned business activities. Such acquisitions may not
be available at the times or on terms acceptable to us, or at all. In addition,
acquiring a business involves many risks, including:

    - disruption of our ongoing business and diversion of resources and
      management time;

    - unforeseen obligations or liabilities;

    - difficulty assimilating the acquired operations and personnel;

    - risks of entering markets in which we have little or no direct prior
      experience;

    - potential impairment of relationships with employees or users as a result
      of changes in management; and

    - potential dilutive issuances of equity, large and immediate write-offs,
      the incurrence of debt, and amortization of goodwill or other intangible
      assets.

    There can be no assurance that we will make any further acquisitions or that
we will be able to obtain additional financing for such acquisitions, if
necessary. If any acquisitions are made, there can be no assurance that we will
be able to successfully integrate the acquired business into our operations or
that the acquired business will perform as expected.

WE FACE RISKS RELATED TO THE INTERNET INDUSTRY

WE COULD BE EXPOSED TO SIGNIFICANT LEGAL LIABILITY IF NEW CASE LAW IS DECIDED,
  OR NEW GOVERNMENT REGULATION IS ENACTED, REGARDING THE INTERNET AND INTERNET
  SERVICE PROVIDERS.

    The law relating to our business and operations is evolving and no clear
legal precedents have been established. The adoption of new laws or the
application of existing laws may decrease the growth in the use of the Internet,
affect telecommunications costs or increase the likelihood or scope of
competition from regional telephone companies. These results could decrease the
demand for our services or increase our cost of doing business, each of which
would cause our gross margins and revenues to fall. In particular, the following
risks could occur:

REGULATION OF CONTENT AND ACCESS COULD LIMIT OUR ABILITY TO GENERATE REVENUES
  AND EXPOSE US TO LIABILITY.

    Prohibition and restriction of Internet content and access could dampen the
growth of Internet use, decrease the acceptance of the Internet as a
communications and commercial medium and expose us to liability. A variety of
restrictions on content and access, primarily as they relate to children, have
been enacted or proposed, including laws which would require Internet service
providers to supply, at cost, filtering technologies to limit or block the
ability of minors to access unsuitable materials on the Internet. Because of
these content restrictions and potential liability to us for materials carried
on or disseminated through our systems, we may be required to implement measures
to reduce our exposure to liability. These measures may require the expenditure
of substantial resources or the discontinuation of our product or service
offerings that subject us to this liability. Further, we could incur substantial
costs in defending against any of these claims and we may be required to pay
large judgments or settlements or alter our

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business practices. In addition, our liability insurance may not cover potential
claims relating to the Internet services we provide or may not be adequate to
indemnify us for all liabilities that may be imposed on us.

WE COULD BE EXPOSED TO LIABILITY FOR DEFAMATION, NEGLIGENCE AND INFRINGEMENT.

    Because users download and redistribute materials that are cached or
replicated by us in connection with our Internet services, claims could be made
against us for defamation, negligence, copyright or trademark infringement, or
other theories based on the nature and content of such materials. While we have
attempted to obtain safe harbor protection against claims of copyright
infringement under the Digital Millenium Copyright Act of 1998, there can be no
guarantee that we will prevail in any such claims. We also could be exposed to
liability because of third-party content that may be accessible through our
services, including links to Web-sites maintained by our users or other third
parties, or posted directly to our Web-site, and subsequently retrieved by a
third party through our services. It is also possible that if any third-party
content provided through our services contains errors, third parties who access
such material could make claims against us for losses incurred in reliance on
such information. These types of claims have been successfully brought against
other online service providers. In particular, copyright and trademark laws are
evolving and it is uncertain how broadly the rights provided under these laws
will be applied to online environments. It is impossible for us to determine who
the potential rights holders may be with respect to all materials available
through our services.

OUR ABILITY TO SELL TARGETED ADVERTISING MAY BE LIMITED IF NEW LAWS RELATING TO
  USER PRIVACY ARE ENACTED.

    Our ability to sell targeted advertising depends on our ability to use
personal information collected from our users. We cannot assure you that our
current information collection procedures and disclosure policies will be found
to be in compliance with existing or future laws or regulations. Our failure to
comply with existing laws, or the adoption of new laws or regulations that
require us to change the way we conduct our business, could make it
cost-prohibitive to operate our business, and prevent us from pursuing our
business strategies including the sale of targeted advertising.

OUR MARGINS AND COSTS WOULD BE ADVERSELY AFFECTED IF OUR BUSINESS BECOMES
  SUBJECT TO TAXATION.

    The tax treatment of activities on or relating to the Internet is currently
unsettled. A number of proposals have been made at the federal, state and local
levels and by foreign governments that could impose taxes on the online sale of
goods and services and other Internet activities. Recently, the Internet Tax
Freedom Act was signed into law, placing a three-year moratorium on new state
and local taxes on Internet commerce. However, there can be no assurance that
future laws imposing taxes or other regulations on commerce over the Internet
would not substantially impair the growth of Internet commerce and, as a result,
harm our margins or make it cost-prohibitive to operate our business.

TELECOMMUNICATIONS REGULATION COULD MAKE IT MORE EXPENSIVE FOR US TO DO
  BUSINESS.

    As an Internet service provider, we are not currently directly regulated by
the Federal Communications Commission or any other agency, other than
regulations applicable to businesses generally. Nevertheless, Internet-related
regulatory policies are continuing to develop, and it is possible that we could
be exposed to regulation in the future. We could be adversely affected if any
regulatory change results in the application of access charges to Internet
service providers because this would substantially increase the cost of using
the Internet. Since one of the largest components of our operating costs is
telecommunications costs, any increase in such costs would have a material
adverse effect on our cost of sales and gross margins. We could also be affected
by any change in the ability of our users to reach our network through a dial-up
telephone call without any additional charges.

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SEASONAL TRENDS IN INTERNET USAGE AND ADVERTISING SALES MAY NEGATIVELY AFFECT
  OUR BUSINESS.

    Seasonal trends could affect the advertising revenues we generate from
operating our Internet services. To the extent that our advertising revenues
depend on the amount of usage by our users, seasonal fluctuations in Internet
usage could affect our advertising revenues during these periods of fluctuation.
In addition, the rate at which new users sign up for our services may be lower
during certain seasons and holiday periods. Because our operating history is so
limited, it is difficult for us to accurately predict these trends and plan
accordingly. Since our operating expenses are based on our expectations of
future revenues, it is possible that seasonal fluctuations could materially and
adversely affect our revenues and our operating results.

IF INTERNET USAGE DOES NOT CONTINUE TO GROW, WE MAY NOT BE ABLE TO GROW OUR
  BUSINESS AND INCREASE OUR REVENUES.

    If our assumption that use of the Internet will continue to grow turns out
to be incorrect, we will not be able to grow our business and increase our
revenues. Substantially all of our revenues are dependent on the continued use
and expansion of the Internet. Use of the Internet has grown dramatically, but
we cannot assure you that usage of the Internet will continue to expand. A
decrease in the demand for Internet services or a reduction in the currently
anticipated growth for such services could cause our user base and our
advertising revenues to decrease.

OUR BRAND AND BUSINESS COULD BE ADVERSELY AFFECTED IF WE ARE NOT ABLE TO PROTECT
  OUR DOMAIN NAMES OR ACQUIRE OTHER RELEVANT DOMAIN NAMES.

    We currently hold the Web domain name relating to our brand, NetZero.com, as
well as numerous other related Web domain names. The acquisition and maintenance
of domain names generally is regulated by governmental agencies and their
designees. The regulation of domain names in the United States and in foreign
countries is subject to change in the near future. As a result, we may be unable
to acquire or maintain relevant domain names in the countries in which we
conduct, or plan to conduct, business. Furthermore, the relationship between
regulations governing domain names and laws protecting trademarks and similar
proprietary rights is unclear. Therefore, we may be unable to prevent third
parties from acquiring domain names that are similar to, infringe upon, dilute
or otherwise decrease the value of our trademarks and other proprietary rights.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

    NetZero currently does not hold any derivative instruments and does not
engage in hedging activities. Also NetZero is not currently party to any
transactions denominated in a foreign currency. Thus, NetZero's exposure to
interest rate and foreign exchange fluctuations is minimal.

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PART II OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

    We are not a party to any material legal proceedings.

ITEM 2. CHANGES IN SECURITIES AND USE OF PROCEEDS

    (c)  SALES OF UNREGISTERED SECURITIES.

    On December 1, 1999, we acquired all of the issued and outstanding capital
stock and options to purchase capital stock of AimTV, Inc. ("Aim"). In
connection with this transaction, we issued to the former shareholders and
option holders of Aim an aggregate of approximately 970,000 shares, and options
to purchase shares, of our common stock. The offer and sale of those shares were
exempt from the registration requirements of the Securities Act by virtue of
Section 4(2) thereof or Regulation D.

    On December 28, 1999, we entered into a Warrant Purchase and CD Distribution
Agreement with General Motors Corporation ("GM"). Under the terms of this
agreement, we issued to GM a warrant to purchase 575,000 shares of our common
stock at a price per share of $28.71. The offer and sale of this warrant and the
shares of common stock issuable upon exercise thereof were exempt from the
registration requirements of the Securities Act by virtue of Section 4(2)
thereof or Regulation D.

    (d)  USE OF PROCEEDS FROM SALES OF REGISTERED SECURITIES.  On September 29,
1999, NetZero completed an initial public offering of its common stock, $.001
par value. The shares of common stock sold in this offering were registered
under the Securities Act of 1933, as amended, on a Registration Statement on
Form S-1 (Reg. No. 333-82827) that was declared effective by the SEC on
September 23, 1999. The offering commenced on September 24, 1999. All
11.5 million shares of common stock registered under the Registration Statement
(including 1.5 million shares sold pursuant to the exercise of the underwriters'
over-allotment option) were sold at a price of $16 per share. The aggregate
price of the offering amount registered was $184 million.

    In connection with the initial public offering, NetZero paid an aggregate of
$12.9 million in underwriting discounts and commissions to the underwriters and
paid other expenses in the amount of approximately $1.8 million. After deducting
the underwriting discounts and commissions and the estimated offering expenses,
NetZero received net proceeds from the offering of approximately
$169.3 million. As of December 31, 1999, NetZero had used approximately
$17 million of the net proceeds from the offering to fund its operating losses
and its working capital requirements. The balance of the proceeds will be used
for general corporate purposes including additions and enhancements to the
Company's server and network infrastructure, working capital, expansion of its
sales and marketing capabilities and brand-name promotions. NetZero may also use
a portion of its proceeds for acquisitions of complementary businesses, services
or technology. Pending these uses, the net proceeds of the offering will be
invested in short-term, interest-bearing, investment-grade instruments. None of
the net proceeds from the offering were paid directly or indirectly to any
director, officer, general partner of NetZero or their associates, persons
owning 10% or more of any class of equity securities of NetZero, or an affiliate
of NetZero.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

    None.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

    None.

ITEM 5. OTHER INFORMATION

    None.

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ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K

       (a) Exhibits

           2.1*  Agreement and Plan of Merger Dated, as of November 15, 1999, by
                 and among NetZero, Inc., NZ Acquisition Corp. and AimTV, Inc.

           27.1   Financial Data Schedule

           -----------------------------------

           *  Incorporated by reference to the similarly numbered exhibit on the
              Form 8-K filed by NetZero, Inc. on December 1, 1999

       (b) Report on Form 8-K

    On December 1, 1999, NetZero filed a Current Report on Form 8-K to report
that, on November 15, 1999, NetZero had entered into an Agreement and Plan of
Merger by and among NetZero, Inc., NZ Acquisition Corp., and AimTV, Inc. The
Agreement and Plan of Merger sets forth the terms and conditions of the merger.

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                                   SIGNATURES

    Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                NETZERO, INC.
                                (REGISTRANT)

                                By:           /s/ CHARLES S. HILLIARD
                                     -----------------------------------------
                                                Charles S. Hilliard
                                         SENIOR VICE PRESIDENT, FINANCE AND
Dated: February 11, 2000                      CHIEF FINANCIAL OFFICER

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