Document:

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                                  NETZERO, INC.

                             STOCK PLEDGE AGREEMENT

                  AGREEMENT made as of this 20th day of March, 1999 by and
between NetZero, Inc., a California corporation (the "Corporation") and Mark
Goldston ("Pledgor").

RECITALS

                  A. In connection with the purchase of 4,190,922 shares of the
Corporation's Common Stock (the "Purchased Shares") on the date of this
Agreement from the Corporation, Pledgor has issued that certain promissory note
(the "Note") dated March 20, 1999 payable to the order of the Corporation in the
principal amount of Six Hundred Twenty-Eight Thousand Six Hundred Thirty-Eight
Dollars and Thirty Cents ($628,638.30).

                  B. Such Note is secured by the Purchased Shares and other
collateral upon the terms set forth in this Agreement.

                  NOW, THEREFORE, it is hereby agreed as follows:

         1.       1.     GRANT OF SECURITY INTEREST. Pledgor hereby grants the
Corporation a security interest in, and assigns, transfers to and pledges with
the Corporation, the following securities and other property (collectively, the
"Collateral"):

                  (i)      (i)     the Purchased Shares delivered to and
         deposited with the Corporation as collateral for the Note;

                  (ii)     (ii)    any and all new, additional or different
         securities or other property subsequently distributed with respect to
         the Purchased Shares which are to be delivered to and deposited with
         the Corporation pursuant to the requirements of Paragraph 3 of this
         Agreement;

                  (iii)    (iii)   any and all other property and money which is
         delivered to or comes into the possession of the Corporation pursuant
         to the terms of this Agreement; and

                  (iv)     (iv)    the proceeds of any sale, exchange or
         disposition of the property and securities described in subparagraphs
         (i), (ii) or (iii) above.

         2.       2.     WARRANTIES. Pledgor hereby warrants that Pledgor is the
owner of the Collateral and has the right to pledge the Collateral and that the
Collateral is free from all liens, adverse claims and other security interests
(other than those created hereby).

                                       1.

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         3.       3.     DUTY TO DELIVER. Any new, additional or different
securities or other property (other than regular cash dividends) which may now
or hereafter become distributable with respect to the Collateral by reason of
(i) any stock split, stock dividend, recapitalization, combination of shares,
exchange of shares or other change affecting the Common Stock as a class without
the Corporation's receipt of consideration or (ii) any merger, consolidation or
other reorganization affecting the capital structure of the Corporation shall,
upon receipt by Pledgor, be promptly delivered to and deposited with the
Corporation as part of the Collateral hereunder. Any such securities shall be
accompanied by one or more properly endorsed stock power assignments.

         4.       4.     PAYMENT OF TAXES AND OTHER CHARGES. Pledgor shall pay,
prior to the delinquency date, all taxes, liens, assessments and other charges
against the Collateral, and in the event of Pledgor's failure to do so, the
Corporation may at its election pay any or all of such taxes and other charges
without contesting the validity or legality thereof. The payments so made shall
become part of the indebtedness secured hereunder and until paid shall bear
interest at the minimum per annum rate required to avoid the imputation of
interest income to the Corporation and compensation income to Pledgor under the
federal tax laws.

         5.       5.     SHAREHOLDER RIGHTS. So long as there exists no event of
default under Paragraph 10 of this Agreement, Pledgor may exercise all
shareholder voting rights and be entitled to receive any and all regular cash
dividends paid on the Collateral and all proxy statements and other shareholder
materials pertaining to the Collateral.

         6.       6.     RIGHTS AND POWERS OF CORPORATION. The Corporation may,
without obligation to do so, exercise at any time and from time to time one or
more of the following rights and powers with respect to any or all of the
Collateral:

                  (i)      (i) subject to the applicable limitations of
         Paragraph 9, accept in its discretion other property of Pledgor in
         exchange for all or part of the Collateral and release Collateral to
         Pledgor to the extent necessary to effect such exchange, and in such
         event the other property received in the exchange shall become part of
         the Collateral hereunder;

                  (ii)     (ii)    perform such acts as are necessary to
         preserve and protect the Collateral and the rights, powers and remedies
         granted with respect to such Collateral by this Agreement; and

                  (iii)    (iii)   transfer record ownership of the Collateral
         to the Corporation or its nominee and receive, endorse and give receipt
         for, or collect by legal proceedings or otherwise, dividends or other
         distributions made or paid with respect to the Collateral, PROVIDED AND
         ONLY IF there exists at the time an outstanding event of default under
         Paragraph 10 of this Agreement. Any cash sums which the Corporation may
         so receive shall be applied to the payment of the Note and any other
         indebtedness secured hereunder, in such order of application as the
         Corporation deems appropriate. Any remaining cash shall be paid over to
         Pledgor.

                  Any action by the Corporation pursuant to the provisions of
this Paragraph 6 may be taken without notice to Pledgor. Expenses reasonably
incurred in connection with such action

                                       2.

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shall be payable by Pledgor and form part of the indebtedness secured
hereunder as provided in Paragraph 12.

         7.       7.     CARE OF COLLATERAL. The Corporation shall exercise
reasonable care in the custody and preservation of the Collateral. However, the
Corporation shall have no obligation to (i) initiate any action with respect to,
or otherwise inform Pledgor of, any conversion, call, exchange right, preemptive
right, subscription right, purchase offer or other right or privilege relating
to or affecting the Collateral, (ii) preserve the rights of Pledgor against
adverse claims or protect the Collateral against the possibility of a decline in
market value or (iii) take any action with respect to the Collateral requested
by Pledgor unless the request is made in writing and the Corporation determines
that the requested action will not unreasonably jeopardize the value of the
Collateral as security for the Note and other indebtedness secured hereunder.

                  Subject to the limitations of Paragraph 9, the Corporation may
at any time release and deliver all or part of the Collateral to Pledgor.

         8.       8.     TRANSFER OF COLLATERAL. In connection with the transfer
or assignment of the Note (whether by negotiation, discount or otherwise), the
Corporation may transfer all or any part of the Collateral, and the transferee
shall thereupon succeed to all the rights, powers and remedies granted the
Corporation hereunder with respect to the Collateral so transferred. Upon such
transfer, the Corporation shall be fully discharged from any further
responsibility for the transferred Collateral and all liability for the
Collateral arising after the date of such transfer.

         9.       9.     RELEASE OF COLLATERAL. Provided all indebtedness
secured hereunder (other than payments not yet due and payable under the Note)
shall at the time have been paid in full and there does not otherwise exist any
event of default under Paragraph 10, the Purchased Shares, together with any
additional Collateral which may hereafter be pledged and deposited hereunder,
shall be released from pledge and returned to Pledgor in accordance with the
following provisions:

                  (i)      (i)     Promptly following (a) payment or prepayment
         of principal of the Note, together with payment of all accrued interest
         to date, one or more of the Purchased Shares held as Collateral
         hereunder shall (subject to the applicable limitations of Paragraphs
         9(iii) and 9(v) below) be released to Pledgor or (b) a determination
         that Excess Value exists, one or more of the Purchased Shares held as
         Collateral hereunder shall (subject to the applicable limitations of
         Paragraphs 9(iii) and 9(v) below) be released to Pledgor; provided that
         if any Purchased Shares are released pursuant to the immediately
         preceding clause and if the fair market value of the Common Stock and
         all other Collateral which would otherwise remain in pledge hereunder
         after such release at any time falls below one hundred and fifty
         percent (150%) of the unpaid principal and accrued interest under the
         Note, Pledgor shall contribute additional collateral hereunder to raise
         such fair market value of the Purchased Shares and all other Collateral
         in pledge up to such 150% level; provided, further, that in no event
         shall Pledgor be required to make any additional contributions
         hereunder in any amount greater than the amount which the fair market
         value of that the original number of Purchased Shares would represent
         as of the date of such contribution. The number of shares to be so
         released shall

                                       3.

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         be equal to the number obtained, as the case may be, by (x)
         multiplying (i) the total number of Purchased Shares held under this
         Agreement at the time of the payment or prepayment, by (ii) a
         fraction, the numerator of which shall be the amount of the
         principal paid or prepaid and the denominator of which shall be the
         unpaid principal balance of the Note immediately prior to such
         payment or prepayment, or (y) multiplying (i) the total number of
         Purchased Shares held under this Agreement at the time of the
         payment or prepayment, by (ii) a fraction, the numerator of which
         shall be the Excess Value and the denominator of which shall be the
         fair market value of the Purchased Shares and all other Collateral
         held in pledge hereunder immediately prior to any such release. In
         no event, however, shall any fractional shares be released. For
         purposes of this Agreement, "Excess Value" shall mean the excess
         amount, if any, that the fair market value of the Purchased Shares
         and Collateral then held in pledge is over 150% of the total unpaid
         principal and accrued interest of the Note, as such foregoing
         amounts are determined each time that Optionee requests a release of
         shares from pledge.

                  (ii)     (ii)    Any additional Collateral which may hereafter
         be pledged and deposited with the Corporation (pursuant to the
         requirements of Paragraph 3) with respect to the Purchased Shares shall
         be released at the same time the particular shares of Common Stock to
         which the additional Collateral relates are to be released in
         accordance with the applicable provisions of Paragraph 9(i).

                  (iii)    (iii)   Under no circumstances, however, shall any
         Purchased Shares or any other Collateral be released if previously
         applied to the payment of any indebtedness secured hereunder. In
         addition, in no event shall any Purchased Shares or other Collateral be
         released pursuant to the provisions of Paragraph 9(i) or 9(ii) if, and
         to the extent, the fair market value of the Common Stock and all other
         Collateral which would otherwise remain in pledge hereunder after such
         release were effected would be less than the unpaid principal and
         accrued interest under the Note.

                  (iv)     (iv)    For all valuation purposes under this
         Agreement, the fair market value per share of Common Stock on any
         relevant date shall be determined in accordance with the following
         provisions:

                           (A)      (A)      If the Common Stock is at the time
                  traded on the Nasdaq National Market, the fair market value
                  shall be the closing selling price per share of Common Stock
                  on the date in question, as such prices are reported by the
                  National Association of Securities Dealers on its Nasdaq
                  system or any successor system. If there is no reported
                  closing selling price for the Common Stock on the date in
                  question, then the closing selling price on the last preceding
                  date for which such quotation exists shall be determinative of
                  fair market value.

                           (B)      (B)      If the Common Stock is at the time
                  listed on the New York Stock Exchange or any other securities
                  exchange, then the fair market value shall be the closing
                  selling price per share of Common Stock on the date in
                  question on the securities exchange serving as the primary
                  market for the Common Stock, as such price is officially
                  quoted in the composite tape of transactions on such exchange.
                  If there is no reported sale of Common Stock on such exchange
                  on the date in question, then the fair market value shall be
                  the

                                       4.

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                  closing selling price on the exchange on the last preceding
                  date for which such quotation exists.

                           (C)      (C)      If the Common Stock is at the time
                  neither listed on any securities exchange nor traded on the
                  Nasdaq National Market, the fair market value shall be
                  determined by the Corporation's Board of Directors after
                  taking into account such factors as the Board shall deem
                  appropriate; provided, however that in the event Pledgor
                  disagrees with the Board's determination, Pledgor and the
                  Board shall agree in good faith on such valuation. If the
                  Pledgor and Corporation do not so agree, Pledgor shall have
                  the right, but not more often than once every six (6) months
                  on a rolling basis, to require the appraisal of the
                  Corporation. If Corporation and Pledgor cannot promptly agree
                  upon an independent, experienced appraiser who is a member of
                  a recognized professional association of business appraisers
                  (an "appraiser"), then each of the Corporation and Pledgor
                  shall appoint such independent, experienced appraiser who
                  shall determine the value of the Common Stock. If the higher
                  of the two appraisals is not more than 10 percent more than
                  the lower of the appraisals, the fair market value shall be
                  the average of the two appraisals (which determination shall
                  be final and binding on the parties and enforceable in any
                  court of competent jurisdiction); provided that if the two
                  appraisals are more than 10 percent apart the two appraisers
                  shall appoint a third appraiser who shall determine the value
                  of the Common Stock, which determination shall be final and
                  binding on the parties and enforceable in any court of
                  competent jurisdiction. All costs of such appraisal shall be
                  equally shared by the Corporation and Employee.

                  (v)      (v)     In the event the Collateral becomes in whole
         or in part comprised of "margin securities" within the meaning of
         Section 207.2(i) of Regulation G of the Federal Reserve Board, then no
         Collateral shall thereafter be substituted for any Collateral under the
         provisions of Paragraph 6(i) or be released under Paragraph 9(i) or
         (ii), unless there is compliance with each of the following additional
         requirements:

                           (A)      (A)      The substitution or release must
                  not increase the amount by which the indebtedness secured
                  hereunder at the time of such substitution or release exceeds
                  the maximum loan value (as defined below) of the Collateral
                  immediately prior to such substitution or release.

                           (B)      (B)      The substitution or release must
                  not cause the amount of indebtedness secured hereunder at the
                  time of such substitution or release to exceed the maximum
                  loan value of the Collateral remaining after such substitution
                  or release is effected.

                           (C)      (C)      For purposes of this Paragraph
                  9(v), the maximum loan value of each item of Collateral shall
                  be determined on the day the substitution or release is to be
                  effected and shall, in the case of the shares of Common Stock
                  and any additional Collateral (other than margin securities),
                  equal the good faith loan value thereof (as defined in Section
                  207.2(e)(1) of Regulation G) and shall, in the case of all
                  margin securities (other than the Common Stock), equal fifty
                  percent (50%) of the current market value of such securities.

                                       5.

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         10.      10. EVENTS OF DEFAULT. The occurrence of one or more of the
following events shall constitute an event of default under this Agreement:

                  (i)      (i)     the failure of Pledgor to pay, when due under
         the Note, any installment of principal or accrued interest after any
         grace period set forth in the Note has expired, if any; or

                  (ii)     (ii)    the wilful failure of Pledgor to perform any
         material obligation imposed upon Pledgor by reason of this Agreement
         within 30 days following written notice to Pledgor detailing such
         failure; or

                  (iii)    (iii)   the material breach of any warranty of
         Pledgor contained in Paragraph 2 of this Agreement.

                  Upon the occurrence of any such event of default, the
Corporation may, at its election, declare the Note and all other indebtedness
secured hereunder to become immediately due and payable and may exercise any or
all of the rights and remedies granted to a secured party under the provisions
of the California Uniform Commercial Code (as now or hereafter in effect),
including (without limitation) the power to dispose of the Collateral by public
or private sale or to accept the Collateral in full payment of the Note and all
other indebtedness secured hereunder.

                  Any proceeds realized from the disposition of the Collateral
pursuant to the foregoing power of sale shall be applied first to the payment of
reasonable expenses incurred by the Corporation in connection with the
disposition and then to the payment of the Note and finally to any other
indebtedness secured hereunder. Any surplus proceeds shall be paid over to
Pledgor. However, in the event such proceeds prove insufficient to satisfy all
obligations of Pledgor under the Note which are recourse to Pledgor, then
Pledgor shall remain personally liable for the remaining obligations under the
Note which are recourse to Pledgor.

         11.      11.    OTHER REMEDIES. The rights, powers and remedies granted
to the Corporation pursuant to the provisions of this Agreement shall be in
addition to all rights, powers and remedies granted to the Corporation under any
statute or rule of law. Any forbearance, failure or delay by the Corporation in
exercising any right, power or remedy under this Agreement shall not be deemed
to be a waiver of such right, power or remedy. Any single or partial exercise of
any right, power or remedy under this Agreement shall not preclude the further
exercise thereof, and every right, power and remedy of the Corporation under
this Agreement shall continue in full force and effect unless such right, power
or remedy is specifically waived by an instrument executed by the Corporation.

         12.      12.    COSTS AND EXPENSES. All costs and expenses (including
reasonable attorneys fees) incurred by the Corporation in the exercise or
enforcement of any right, power or remedy granted it under this Agreement shall
become part of the indebtedness secured hereunder and shall constitute a
personal liability of Pledgor payable immediately upon demand and bearing
interest until paid at the minimum per annum rate required to avoid the
imputation of interest income to the Corporation and compensation income to
Pledgor under the federal tax laws.

                                       6.

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         13.      13.    APPLICABLE LAW. This Agreement shall be governed by and
construed in accordance with the laws of the State of California without resort
to that State's conflict-of-laws rules.

         14.      14.    SUCCESSORS. This Agreement shall be binding upon the
Corporation and its successors and assigns and upon Pledgor and the executors,
heirs and legatees of Pledgor's estate.

         15.      15.    SEVERABILITY. If any provision of this Agreement is
held to be invalid under applicable law, then such provision shall be
ineffective only to the extent of such invalidity, and neither the remainder of
such provision nor any other provisions of this Agreement shall be affected
thereby.

                  IN WITNESS WHEREOF, this Agreement has been executed by
Pledgor and the Corporation on this 20th day of March, 1999.

NETZERO                                            PLEDGOR

/s/ RONALD T. BURR                                 /s/ MARK GOLDSTON
-------------------------------                    --------------------------
By: Ronald T. Burr                                 Mark Goldston
Title: President
                                                   Address:
                                                           ------------------

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

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

                                       7.

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                                  NETZERO, INC.

                       AMENDMENT TO STOCK PLEDGE AGREEMENT

         THIS AMENDMENT TO STOCK PLEDGE AGREEMENT (this "Amendment") is dated as
of May 14, 1999, between Mark Goldston ("Goldston") and NetZero, Inc. (the
"Company"). All capitalized terms used herein without definition shall have the
meanings ascribed to them in that certain Stock Pledge Agreement dated as of
March 20, 1999 (the "Stock Pledge Agreement"), between Goldston and the Company.

         In consideration of good and valuable consideration, the receipt of
which is hereby acknowledged, the parties hereto agree as follows:

         1.       Paragraph 1 of the Stock Pledge Agreement is hereby amended
and restated in its entirety as follows:

                  "GRANT OF SECURITY INTEREST. Pledgor hereby grants the
                  Corporation a security interest in, and assigns, transfers to
                  and pledges with the Corporation, the following securities and
                  other property (collectively, the "Collateral"):

                  (i) the Purchased Shares delivered to and deposited with the
                  Corporation as collateral for the Note;

                  (ii) 36,232 shares of the Corporation's Series D Preferred
                  Stock (the "Pledged Series D Stock");

                  (iii) any and all new, additional or different securities or
                  other property subsequently distributed with respect to the
                  Purchased Shares or the Pledged Series D Stock which are to be
                  delivered to and deposited with the Corporation pursuant to
                  the requirements of Paragraph 3 of this Agreement;

                  (iv) any and all other property and money which is delivered
                  to or comes into the possession of the Corporation pursuant to
                  the terms of this Agreement; and

                  (v) the proceeds of any sale, exchange or disposition of the
                  property and securities described in subparagraphs (i), (ii),
                  (iii) or (iv) above."

         2. Paragraphs 9(i) through (iv) of the Stock Pledge Agreement are
hereby amended and restated in their entirety as follows:

                  "RELEASE OF COLLATERAL. Provided all indebtedness secured
                  hereunder (other than payments not yet due and payable under
                  the Note) shall at the time have been paid in full and there
                  does not otherwise exist any event of default under Paragraph
                  10, the Purchased Shares and the Pledged Series

                                       1.

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                  D Stock, together with any additional Collateral which may
                  hereafter be pledged and deposited hereunder, shall be
                  released from pledge and returned to Pledgor in accordance
                  with the following provisions:

                  (i) Promptly following (a) payment or prepayment of principal
                  of the Note, together with payment of all accrued interest to
                  date, one or more of the Purchased Shares or the Pledged
                  Series D Stock held as Collateral hereunder shall (subject to
                  the applicable limitations of Paragraphs 9(iii), (v) and (vi)
                  below) be released to Pledgor or (b) a determination that
                  Excess Value exists, one or more of the Purchased Shares or
                  the Pledged Series D Stock held as Collateral hereunder shall
                  (subject to the applicable limitations of Paragraphs 9(iii),
                  (v) and (vi) below) be released to Pledgor; provided that if
                  any Purchased Shares or Pledged Series D Stock are released
                  pursuant to the immediately preceding clause and if the fair
                  market value of the Purchased Shares, Pledged Series D Stock
                  and all other Collateral which would otherwise remain in
                  pledge hereunder after such release at any time falls below
                  one hundred and fifty percent (150%) of the unpaid principal
                  and accrued interest under the Note, Pledgor shall contribute
                  additional collateral hereunder to raise such fair market
                  value of the Purchased Shares, the Pledged Series D Stock, and
                  all other Collateral in pledge up to such 150% level;
                  provided, further, that in no event shall Pledgor be required
                  to make any additional contributions hereunder in any amount
                  greater than the amount which the fair market value of the
                  original number of Purchased Shares would represent as of the
                  date of such contribution. The number of shares to be so
                  released shall be equal to the number obtained, as the case
                  may be, by (x) multiplying (i) the total number of shares of
                  Common Stock represented by the Purchased Shares and the
                  Pledged Series D Stock (on an as-converted basis) held under
                  this Agreement at the time of the payment or prepayment, by
                  (ii) a fraction, the numerator of which shall be the amount of
                  the principal paid or prepaid and the denominator of which
                  shall be the unpaid principal balance of the Note immediately
                  prior to such payment or prepayment, or (y) multiplying (i)
                  the total number of shares of Common Stock represented by the
                  Purchased Shares and the Pledged Series D Stock (on an
                  as-converted basis) held under this Agreement at the time of
                  the payment or prepayment, by (ii) a fraction, the numerator
                  of which shall be the Excess Value and the denominator of
                  which shall be the fair market value of the Purchased Shares,
                  the Pledged Series D Stock and all other Collateral held in
                  pledge hereunder immediately prior to any such release. In no
                  event, however, shall any fractional shares be released. For
                  purposes of this Agreement, "Excess Value" shall mean the
                  excess amount, if any, that the fair market value of the
                  Purchased Shares, the Pledged Series D Stock and Collateral
                  then held in pledge is over 150% of the total unpaid principal
                  and accrued interest of the Note, as such foregoing amounts
                  are determined each time that Optionee requests a release of
                  shares from pledge.

                                       2.

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                  (ii) Any additional Collateral which may hereafter be pledged
                  and deposited with the Corporation (pursuant to the
                  requirements of Paragraph 3) with respect to the Purchased
                  Shares or the Pledged Series D Stock shall be released at the
                  same time the particular shares of Purchased Shares or Pledged
                  Series D Stock to which the additional Collateral relates are
                  to be released in accordance with the applicable provisions of
                  Paragraph 9(i).

                  (iii) Under no circumstances, however, shall any Purchased
                  Shares, Pledged Series D Stock or any other Collateral be
                  released if previously applied to the payment of any
                  indebtedness secured hereunder. In addition, in no event shall
                  any Purchased Shares, Pledged Series D Stock, or other
                  Collateral be released pursuant to the provisions of Paragraph
                  9(i) or 9(ii) if, and to the extent, the fair market value of
                  the Purchased Shares, Pledged Series D Stock and all other
                  Collateral which would otherwise remain in pledge hereunder
                  after such release were effected would be less than the unpaid
                  principal and accrued interest under the Note.

                  (iv) For all valuation purposes under this Agreement, the fair
                  market value per share of Purchased Shares and/or Pledged
                  Series D Stock on any relevant date shall be determined in
                  accordance with the following provisions:

                  (A) If the security is at the time traded on the Nasdaq
                  National Market, the fair market value shall be the closing
                  selling price per share of such security on the date in
                  question, as such prices are reported by the National
                  Association of Securities Dealers on its Nasdaq system or any
                  successor system. If there is no reported closing selling
                  price for the security on the date in question, then the
                  closing selling price on the last preceding date for which
                  such quotation exists shall be determinative of fair market
                  value.

                  (B) If the security is at the time listed on the New York
                  Stock Exchange or any other securities exchange, then the fair
                  market value shall be the closing selling price per share of
                  such security on the date in question on the securities
                  exchange serving as the primary market for such security, as
                  such price is officially quoted in the composite tape of
                  transactions on such exchange. If there is no reported sale of
                  such security on such exchange on the date in question, then
                  the fair market value shall be the closing selling price on
                  the exchange on the last preceding date for which such
                  quotation exists.

                  (C) If the security is at the time neither listed on any
                  securities exchange nor traded on the Nasdaq National Market,
                  the fair market value shall be determined by the Corporation's
                  Board of Directors after taking into account such factors as
                  the Board shall deem appropriate; provided, however that in
                  the event Pledgor disagrees with the Board's determination,
                  Pledgor and the Board shall agree in good faith on such
                  valuation. If the Pledgor and Corporation do not so agree,
                  Pledgor shall

                                       3.

<Page>

                  have the right, but not more often than once every six (6)
                  months on a rolling basis, to require the appraisal of the
                  Corporation. If the Corporation and Pledgor cannot promptly
                  agree upon an independent, experienced appraiser who is a
                  member of a recognized professional association of business
                  appraisers (an "appraiser"), then each of the Corporation
                  and Pledgor shall appoint such independent, experienced
                  appraiser who shall determine the value of the security. If
                  the higher of the two appraisals is not more than 10
                  percent more than the lower of the appraisals, the fair
                  market value shall be the average of the two appraisals
                  (which determination shall be final and binding on the
                  parties and enforceable in any court of competent
                  jurisdiction); provided that if the two appraisals are more
                  than 10 percent apart the two appraisers shall appoint a
                  third appraiser who shall determine the value of the
                  security, which determination shall be final and binding on
                  the parties and enforceable in any court of competent
                  jurisdiction. All costs of such appraisal shall be equally
                  shared by the Corporation and Employee."

         3. Paragraph 9(vi) is hereby added to the Stock Pledge Agreement as
follows:

                  "(vi) If any Purchased Shares or Pledged Series D Stock are to
                  be released from their pledge hereunder pursuant to Paragraph
                  9(i), the order of such release shall be Purchased Shares
                  first, and then Pledged Series D Stock. No shares of Pledged
                  Series D Stock shall be released from the pledge hereunder
                  until all Purchased Shares have been released from their
                  pledge hereunder."

         4. In all other respects, the Stock Pledge Agreement shall remain
unchanged and in full force and effect in accordance with the terms thereof.

                  IN WITNESS WHEREOF, each of the parties hereto has executed
this Amendment as of the date first above written.

                                            NETZERO, INC.

                                            By: /s/ RONALD T. BURR
                                               ------------------------------
                                               Ronald T. Burr, President

                                            /s/ MARK R. GOLDSTON
                                            ---------------------------------
                                            MARK R. GOLDSTON

                                       4.<Page>

                                  NETZERO, INC.

                     NOTE SECURED BY STOCK PLEDGE AGREEMENT

$628,638.30                                                       March 20, 1999
                                                    Westlake Village, California

                  FOR VALUE RECEIVED, Mark Goldston ("Maker") promises to pay to
the order of NetZero, Inc. (the "Corporation"), at its corporate offices at 3835
East Thousand Oaks Boulevard, #338, Westlake Village, California, the principal
sum of Six Hundred Twenty-Eight Thousand Six Hundred Thirty-Eight Dollars and
Thirty Cents ($628,638.30) together with all accrued interest thereon, upon the
terms and conditions specified below.

         1.       INTEREST. Interest shall accrue on the unpaid balance
outstanding from time to time under this Note at the rate of 4.83% per annum,
compounded annually.

         2.       PRINCIPAL. The entire principal balance of this Note, together
with all accrued and unpaid interest, shall become due and payable in one lump
sum on March 20, 2004.

         3.       PAYMENT. Payment shall be made in lawful tender of the United
States and shall be applied first to the payment of all accrued and unpaid
interest and then to the payment of principal. Prepayment of the principal
balance of this Note, together with all accrued and unpaid interest, may be made
in whole or in part at any time without penalty.

         4.       EVENTS OF ACCELERATION. The entire unpaid principal balance of
this Note, together with all accrued and unpaid interest, shall become
immediately due and payable prior to the specified due date of this Note upon
the occurrence of one or more of the following events:

                  A.       the insolvency of the Maker, the commission of any
         act of bankruptcy by the Maker, the execution by the Maker of a general
         assignment for the benefit of creditors, the filing by or against the
         Maker of any petition in bankruptcy or any petition for relief under
         the provisions of the Federal Bankruptcy Act or any other state or
         Federal law for the relief of debtors and the continuation of such
         petition without dismissal for a period of thirty (30) days or more,
         the appointment of a receiver or trustee to take possession of any
         property or assets of the Maker or the attachment of or execution
         against any property or assets of the Maker; or

                  B.       the occurrence of any event of default under the
         Stock Pledge Agreement securing this Note or any obligation secured
         thereby which default is not cured within the applicable cure periods
         set forth therein.

         5.       Intentionally omitted.

         6.       SECURITY. The proceeds of the loan evidenced by this Note
shall be applied solely to the payment of the purchase price of 4,190,922 shares
of the Corporation's common stock and payment of this Note shall be secured by a
pledge of those shares with the Corporation pursuant to the Stock Pledge
Agreement to be executed this date by the Maker. All amounts due under this Note
shall be 50% recourse to Maker and 50% non-recourse to Maker. If

                                       1.

<Page>

Maker prepays any principal amounts hereunder, the recourse and nonrecourse
portions of this Note shall be proportionately reduced.

         7.       COLLECTION. If action is instituted to collect this Note, the
Maker promises to pay all costs and expenses (including reasonable attorneys'
fees) incurred in connection with such action.

         8.       WAIVER. A waiver of any term of this Note, the Stock Pledge
Agreement or of any of the obligations secured thereby must be made in writing
and signed by a duly-authorized officer of the Corporation and any such waiver
shall be limited to its express terms. No delay by the Corporation in acting
with respect to the terms of this Note or the Stock Pledge Agreement shall
constitute a waiver of any breach, default or failure of a condition under this
Note, the Stock Pledge Agreement or the obligations secured thereby.

         The Maker waives presentment, demand, notice of dishonor, notice of
default or delinquency, notice of acceleration, notice of protest and
nonpayment, notice of costs, expenses or losses and interest thereon, notice of
interest on interest and diligence in taking any action to collect any sums
owing under this Note or in proceeding against any of the rights or interests in
or to properties securing payment of this Note.

         9.       CONFLICTING AGREEMENTS. In the event of any inconsistencies
between the terms of this Note and the terms of any other document related to
the loan evidenced by this Note, the terms of this Note shall prevail.

         10.      GOVERNING LAW. This Note shall be construed in accordance with
the laws of the State of California without regard to conflict of laws
principles.

                                                 /s/ MARK GOLDSTON
                                                 -----------------------------
                                                 MAKER:  MARK GOLDSTON

                                       2.

<Page>

                                  NETZERO, INC.

                                AMENDMENT TO NOTE

         THIS AMENDMENT TO NOTE (this "Amendment") is dated as of May 14, 1999,
between Mark Goldston ("Goldston") and NetZero, Inc. (the "Company"). All
capitalized terms used herein without definition shall have the meanings
ascribed to them in that certain Note Secured by Stock Pledge Agreement dated
March 20, 1999 (the "Note"), made by Goldston in favor of the Company,
evidencing a loan in the amount of $628,638.30.

         In consideration of good and valuable consideration, the receipt of
which is hereby acknowledged, the parties hereto agree as follows:

         1.       Paragraph 6 of the Note is hereby amended and restated in its
entirety as follows:

                  "SECURITY. The proceeds of the loan evidenced by this Note
                  shall be applied solely to the payment of the purchase price
                  of 4,190,922 shares of the Corporation's common stock and
                  payment of this Note shall be secured by a pledge of (a) those
                  shares, and (b) 36,232 shares of the Corporation's Series D
                  Preferred Stock. Such pledge shall be with the Corporation
                  pursuant to that certain Stock Pledge Agreement dated as of
                  March 20, 1999, between the Corporation and the Maker, as
                  amended from time to time. All amounts due under this Note
                  shall be 100% recourse to Maker."

         2.       In all other respects, the Note shall remain unchanged and in
full force and effect in accordance with the terms thereof.

                  IN WITNESS WHEREOF, each of the parties hereto has executed
this Amendment as of the date first above written.

                                                NETZERO, INC.

                                                By: /s/ RONALD T. BURR
                                                   ---------------------------
                                                    Ronald T. Burr, President

                                                /s/ MARK R. GOLDSTON
                                                ------------------------------
                                                MARK R. GOLDSTON

                                       1.

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