<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  FORM 10-QSB/A
                                (Amendment No. 1)

           (X) QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

                FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 1999

                                       OR

          ( ) TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                             SECURITIES ACT OF 1934

                FOR THE TRANSITION PERIOD FROM _________ TO _____

                        COMMISSION FILE NUMBER 000-25147

                             INTERNET AMERICA, INC.
             (Exact name of registrant as specified in its charter)

           TEXAS                                           86-0778979
(State or other jurisdiction of                        (I.R.S. Employer
 incorporation or organization)                      Identification Number)

350 N. ST. PAUL, SUITE 3000, DALLAS, TX                      75201
(Address of principal executive offices)                   (Zip Code)


Registrant's telephone number, including area code: (214) 861-2500

         Indicate by check mark whether the registrant (1) has filed all 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.

                           OUTSTANDING AT MAY 9, 2000
                        --------------------------------

       Common Stock at $.01 par value             9,704,632 Shares

                                =================



<PAGE>   2




Explanatory Note

This Form 10-QSB/A is filed to amend the Form 10-QSB for the period ended
September 30, 1999 (the "Original Form 10-QSB") to restate the Financial
Statements (Item 1) and make the corresponding changes to Management's
Discussion and Analysis of Financial Condition and Results of Operations (Item
2) and the Financial Data Schedule. Subsequent to the issuance of the Company's
financial statements in the original Form 10-QSB, we discovered a data
processing error in the calculation of deferred revenue. This error had the
effect of understating deferred revenue and overstating revenue as of and for
the three months ended September 30, 1999. The effects of the restatement on the
financial statements are more fully described in Note 4 of the Notes to
Condensed Consolidated Financial Statements.

This report continues to speak as of the date of the Original Form 10-QSB, and
we have not updated the disclosures in this report to speak to any later date.
While this report primarily relates to the historical period covered, events may
have taken place since the date of the Original Form 10-QSB that might have been
reflected in this report if they had taken place prior to the filing of the
Original Form 10-QSB. All information contained in this amendment is subject to
updating and supplementing as provided in our periodic reports filed with the
SEC.

PART I - FINANCIAL INFORMATION

ITEM 1 - FINANCIAL STATEMENTS

                     INTERNET AMERICA, INC. AND SUBSIDIARIES
                      CONDENSED CONSOLIDATED BALANCE SHEETS

<TABLE>
<CAPTION>

                                                                      September 30,       June 30,
                                                                          1999              1999
                                                                      --------------    --------------
                                              ASSETS                    (Unaudited)
                                                                       (As Restated,
                                                                        See Note 4)

<S>                                                                   <C>               <C>
CURRENT ASSETS:
       Cash and cash equivalents                                      $    3,303,947    $    5,845,562
       Trade receivables, net                                              1,212,126         1,122,894
       Prepaid expenses and other current assets                             128,906           126,433
                                                                      --------------    --------------
              Total current assets                                         4,644,979         7,094,889

PROPERTY AND EQUIPMENT, net                                                2,311,849         2,622,637

INTANGIBLES, net                                                           9,552,032         8,978,384

OTHER                                                                        210,040           217,494
                                                                      --------------    --------------

                                                                      $   16,718,900    $   18,913,404
                                                                      ==============    ==============

                               LIABILITIES AND SHAREHOLDERS' EQUITY

CURRENT LIABILITIES:
       Trade accounts payable                                         $    2,041,174    $    2,131,201
       Accrued liabilities                                                   884,161         1,068,774
       Deferred revenue                                                    3,153,443         3,358,347
       Current maturities of long-term debt                                  213,087           434,934
       Current maturities of capital lease obligations                        48,750            41,195
                                                                      --------------    --------------
              Total current liabilities                                    6,340,615         7,034,451

LONG-TERM DEBT, net of current portion                                       206,190           151,997

CAPITAL LEASE OBLIGATIONS, net of current portion                             87,000           102,246
                                                                      --------------    --------------
              Total liabilities                                            6,633,805         7,288,694
                                                                      --------------    --------------

SHAREHOLDERS' EQUITY:
       Common stock, $.01 par value; 40,000,000 shares authorized,
               7,062,439 and 6,912,930  issued and outstanding at
              September 30, 1999, and June 30, 1999, respectively             70,625            69,130
       Additional paid-in capital                                         24,512,851        24,231,065
       Accumulated deficit                                               (14,498,381)      (12,675,485)
                                                                      --------------    --------------
              Total shareholders' equity                                  10,085,095        11,624,710
                                                                      --------------    --------------

                                                                      $   16,718,900    $   18,913,404
                                                                      ==============    ==============
</TABLE>



See accompanying notes to condensed consolidated financial statements.




                                       2
<PAGE>   3




Financial Statements - Continued

                     INTERNET AMERICA, INC. AND SUBSIDIARIES
                 CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                                   (Unaudited)

<TABLE>
<CAPTION>

                                                Three Months Ended
                                                    September 30,
                                           --------------------------------
                                                1999               1998
                                           --------------    --------------
                                            (As Restated,
                                             See Note 4)
<S>                                        <C>               <C>
REVENUES:
       Access                              $    4,468,760    $    3,594,785
       Business services                          916,831           522,947
       Other                                      206,608            29,684
                                           --------------    --------------
          Total                                 5,592,199         4,147,416
                                           --------------    --------------

OPERATING COSTS AND EXPENSES:
       Connectivity and operations              3,150,195         2,048,439
       Sales and marketing                      1,498,470           850,858
       General and administrative               1,387,200           837,995
       Depreciation and amortization            1,416,012           481,768
                                           --------------    --------------
          Total                                 7,451,877         4,219,060
                                           --------------    --------------

OPERATING LOSS                                 (1,859,678)          (71,644)
INTEREST INCOME (EXPENSE), NET                     36,782          (108,933)
                                           --------------    --------------

LOSS BEFORE INCOME TAX                         (1,822,896)         (180,577)
INCOME TAX EXPENSE                                     --           (10,000)
                                           --------------    --------------

NET LOSS                                   $   (1,822,896)   $     (190,577)
                                           ==============    ==============

NET LOSS PER COMMON
SHARE:

       BASIC                               $        (0.26)   $        (0.05)
                                           ==============    ==============

       DILUTED                             $        (0.26)   $        (0.05)
                                           ==============    ==============

WEIGHTED AVERAGE COMMON
SHARES OUTSTANDING:

       BASIC                                    7,009,211         3,914,856

       DILUTED                                  7,009,211         3,914,856
</TABLE>



See accompanying notes to condensed consolidated financial statements.



                                       3
<PAGE>   4




Financial Statements - Continued

                     INTERNET AMERICA, INC. AND SUBSIDIARIES
                 CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                   (Unaudited)

<TABLE>
<CAPTION>

                                                                                 Three Months Ended
                                                                                    September 30,
                                                                              --------------------------
                                                                                 1999            1998
                                                                              -----------    -----------
                                                                             (As Restated,
                                                                              See Note 4)

<S>                                                                           <C>            <C>
OPERATING ACTIVITIES:
     Net loss                                                                 $(1,822,896)   $  (190,577)
     Adjustments to reconcile net loss to net cash used in
     operating activities:
         Depreciation and amortization                                          1,416,012        481,768
         Changes in operating assets and liabilities (excluding amounts
         obtained in acquisitions):
             Accounts receivable                                                  (89,235)      (166,017)
             Prepaid expenses and other current assets                             (7,064)       (15,386)
             Other assets                                                           6,068       (295,592)
             Accounts payable and accrued liabilities                            (212,213)       158,769
             Deferred revenue                                                    (207,751)      (130,511)
                                                                              -----------    -----------
                 Net cash used in operating activities                           (917,079)      (157,546)
                                                                              -----------    -----------


INVESTING ACTIVITIES:
     Purchases of property and equipment                                         (147,722)      (141,649)
     Purchases of subscribers                                                  (1,576,103)            --
                                                                              -----------    -----------
                 Net cash used in investing activities                         (1,723,825)      (141,649)
                                                                              -----------    -----------

FINANCING ACTIVITIES:
     Proceeds from exercise of stock options                                      273,014             --
     Proceeds from issuance of note payable to related party                           --        311,186
     Principal payments of capital lease obligations                               (7,691)      (110,571)
     Principal payments of notes payable to shareholders                               --       (230,912)
     Principal payments of long-term debt                                        (166,034)       (38,162)
     Payments on line of credit                                                        --        (77,238)
                                                                              -----------    -----------
                 Net cash provided by (used in) financing activities               99,289       (145,697)
                                                                              -----------    -----------

NET DECREASE IN CASH AND CASH EQUIVALENTS                                      (2,541,615)      (444,892)

CASH AND CASH EQUIVALENTS, beginning of period                                  5,845,562        618,290
                                                                              -----------    -----------

CASH AND CASH EQUIVALENTS, end of period                                      $ 3,303,947    $   173,398
                                                                              ===========    ===========

SUPPLEMENTAL INFORMATION:
     Cash paid for interest                                                   $    12,350    $    71,493
     Cash paid for income taxes                                               $        --    $    15,750
     Contribution of capital in exchange for note payable                     $    10,267    $        --
</TABLE>


See accompanying notes to condensed consolidated financial statements.




                                       4
<PAGE>   5



                             INTERNET AMERICA, INC.
              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                                   (Unaudited)

1.     Basis of Presentation

       Certain information and footnote disclosures normally included in
       financial statements prepared in accordance with generally accepted
       accounting principles have been condensed or omitted pursuant to Article
       10 of Regulation S-X of the Securities and Exchange Commission. The
       accompanying unaudited condensed financial statements reflect, in the
       opinion of management, all adjustments necessary to achieve a fair
       statement of the Company's financial position and results of operations
       for the interim periods presented. All such adjustments are of a normal
       and recurring nature. These condensed financial statements should be read
       in conjunction with the financial statements for the year ended June 30,
       1999, included in the Company's Annual Report on Form 10-KSB (File No
       000-25147).

2.     Earnings Per Share

       There are no adjustments required to be made to net loss for the purpose
       of computing basic and diluted earnings per share ("EPS"). During the
       quarter ended September 30, 1999, options to purchase 872,079 shares of
       common stock were not included in the computation of diluted EPS because
       the Company incurred a net loss for the period and the effect of such
       instruments is antidilutive. During the quarter ended September 30, 1999,
       options to purchase 146,195 shares of common stock had been exercised.

3.     Business Combinations

       Each of the following acquisitions has been accounted for using the
       purchase method of accounting, and resulting intangibles are being
       amortized over a three year period.

       On June 30, 1999, we acquired all the outstanding common stock of
       NeoSoft, Inc. ("NeoSoft"), an ISP in Houston, Texas, for $8.1 million.
       Assets of NeoSoft include approximately 9,500 individual and corporate
       Internet access accounts, including customer support and network
       operations facilities in Houston and New Orleans. Intangibles acquired as
       a result of the acquisition aggregated approximately $8.7 million.

       On July 26, 1999, we acquired the subscribers of King Dinosaur, Inc.
       d/b/a KDI Internet Solutions, a Texas corporation ("KDi"), under the
       terms of an Asset Purchase Agreement. According to the agreement, we
       agreed to pay up to $464,800, half of which was paid upon closing. The
       remaining payment is contingent on the actual number of KDi subscribers
       that transition to Internet America's service by November 23, 1999.


                                       5
<PAGE>   6




       On July 28, 1999, we acquired the subscribers of INTX Networking, L.L.C.,
       a Texas limited liability company ("INTX"), under the terms of an Asset
       Purchase Agreement. According to the agreement, we agreed to pay up to
       $380,600 in cash, half of which was paid upon closing. The remaining
       payment is contingent on the actual number of INTX subscribers that
       transition to Internet America's service by January 24, 2000.

       On August 9, 1999, we acquired the Texas dial-up subscribers of Pointe
       Communications Corporation, Inc., a Nevada corporation ("PointeCom"),
       under the terms of an Asset Purchase Agreement. According to the
       agreement, we agreed to pay up to $2,000,000 in cash, half of which was
       paid upon closing. The remaining payment is contingent on the actual
       number of PointeCom subscribers that transition to Internet America's
       service by October 9, 2000.

       On September 12, 1999, we signed a definitive agreement to acquire all of
       the outstanding shares of PDQ.Net, Incorporated, a Houston-based ISP
       ("PDQ"), in a stock-for-stock transaction. According to the agreement, we
       will issue 2,425,000 shares of our common stock in exchange for all the
       outstanding stock of PDQ. The value of the transaction is approximately
       $29.4 million based on the September 30, 1999 closing price for Internet
       America's common stock. The transaction is contingent upon approval of
       Internet America and PDQ shareholders and is expected to be accounted for
       as a purchase.

4.     Restatement

       Subsequent to the issuance of the Company's financial statements in its
       Form 10-Q for the three months ended September 30, 1999, we discovered a
       data processing error in the calculation of deferred revenue. This error
       had the effect of understating deferred revenue and overstating revenue
       as of and for the three months ended September 30, 1999.

       As a result, the accompanying financial statements as of and for the
       three months ended September 30, 1999 have been restated from amounts
       previously reported to properly record these transactions. A summary of
       the effects of the restatement is as follows:

<TABLE>
<CAPTION>

                                             Previously
                                              Reported          Restated
                                           --------------    --------------
<S>                                        <C>               <C>
As of September 30, 1999:
     Deferred revenue                      $    2,907,039    $    3,153,443
     Accumulated deficit                   $  (14,251,977)   $  (14,498,381)

Three months ended September 30, 1999:
     Access revenues                       $    4,715,164    $    4,468,760
     Total revenues                        $    5,838,603    $    5,592,199
     Operating loss                        $   (1,613,274)   $   (1,859,678)
     Loss before income tax                $   (1,576,492)   $   (1,822,896)
     Net loss                              $   (1,576,492)   $   (1,822,896)

     Net loss per common share:
        Basic                              $        (0.22)   $        (0.26)
        Diluted                            $        (0.22)   $        (0.26)
</TABLE>



                                       6
<PAGE>   7




ITEM 2-

                     MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                  FINANCIAL CONDITION AND RESULTS OF OPERATIONS

This section contains "forward-looking statements" within the meaning of Section
27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act
of 1934. These statements, identified by words such as "anticipate," "believe,"
"estimate," "should," "expect" and similar expressions, include our expectations
and objectives regarding our future financial position, operating results and
business strategy. These statements reflect the current views of management with
respect to future events and are subject to risks, uncertainties and other
factors that may cause our actual results, performance or achievements, or
industry results, to be materially different from those described in the
forward-looking statements. We do not intend to update the forward-looking
information to reflect actual results or changes in the factors affecting such
forward-looking information. Our Annual Report on Form 10-KSB for the fiscal
year ended June 30, 1999, filed with the Securities and Exchange Commission on
September 15, 1999, discusses some additional important factors that could cause
our actual results to differ materially from those in such forward-looking
statements.


OVERVIEW

      Internet America is an Internet service provider ("ISP") that provides a
wide array of Internet services tailored to meet the needs of individual and
business subscribers. As of September 30, 1999, we served approximately 105,000
subscribers in the southwestern United States. Our business model is to create
high user density in each geographic area we serve which allows us to realize
substantial marketing and operating efficiencies.

      Our highest priority is to rapidly build market share in specific regions,
instead of deploying extensive network infrastructure with a substantial number
of underutilized points of presence (POPs). Our growth strategy focuses on
continuing to add customers in existing markets and quickly building a critical
mass of subscribers in new markets.

      We offer Internet services tailored to meet the needs of both individual
and business subscribers. Our primary service offering is dial-up and broadband
Internet access. For our business subscribers, we offer dedicated high speed
Internet access, Web hosting and other services.

      Our most popular service package includes unlimited dial-up Internet
access for $19.95 a month. We also offer value-added services for additional
fees, including multiple e-mail boxes, personalized e-mail addresses and
personal Web sites.

      Our Expresslane DSL product provides high-speed Internet access over
existing telephone lines, and allows subscribers to simultaneously use a single
telephone line for voice service and for access to the Internet. In addition,
the product is an "always on" connection thereby removing wait times associated
with dialing into a network. We offer an array of Expresslane DSL bandwidth
options to consumers at prices ranging from $9.95 per month to $99.95 per month.
The Expresslane DSL product offers our subscribers a cost-effective way of
substantially increasing bandwidth in residences and businesses.


RECENT ACQUISITIONS

      On June 30, 1999, we acquired all the outstanding common stock of NeoSoft,
Inc. ("NeoSoft"), an ISP in Houston, Texas, for $8.1 million. Assets of NeoSoft
include approximately 9,500 individual and corporate Internet access accounts,
including customer support and network operations facilities in Houston and New
Orleans.

      On July 26, 1999, we acquired the subscribers of King Dinosaur, Inc. d/b/a
KDI Internet Solutions, a Texas corporation ("KDi"), under the terms of an Asset
Purchase Agreement. According to the agreement, we agreed to pay up to $464,800,
half of which was paid upon closing. The remaining payment is contingent on the
actual number of KDi subscribers that that transition to Internet America's
service by November 23, 1999.


                                       7
<PAGE>   8




      On July 28, 1999, we acquired the subscribers of INTX Networking, L.L.C.,
a Texas limited liability company ("INTX"), under the terms of an Asset Purchase
Agreement. According to the agreement, we agreed to pay up to $380,600 in cash,
half of which was paid upon closing. The remaining payment is contingent on the
actual number of INTX subscribers that transition to Internet America's service
by January 24, 2000.

      On August 9, 1999, we acquired the Texas dial-up subscribers of Pointe
Communications Corporation, Inc., a Nevada corporation ("PointeCom"), under the
terms of an Asset Purchase Agreement. According to the agreement, we agreed to
pay up to $2,000,000 in cash, half of which was paid upon closing. The remaining
payment is contingent on the actual number of PointeCom subscribers that
transition to Internet America's service by October 9, 2000.

      On September 12, 1999, we signed a definitive agreement to acquire all of
the outstanding shares of PDQ.Net, Incorporated, a Houston-based ISP ("PDQ"), in
a stock-for-stock transaction. According to the agreement, we will issue
2,425,000 shares of our common stock in exchange for all the outstanding stock
of PDQ. The value of the transaction is approximately $29.4 million based on the
September 30, 1999 closing price for Internet America's common stock. The
transaction is contingent upon approval of Internet America and PDQ shareholders
and is expected to be accounted for as a purchase.


STATEMENT OF OPERATIONS

       Access revenues are derived primarily from individual dial-up Internet
access, whether analog or ISDN, and value-added services, such as multiple
e-mail boxes and personalized e-mail addresses. Business services revenues are
derived primarily from dedicated connectivity, bulk dial-up access and Web
services.

       A brief description of each element of our operating expenses follows:

            Connectivity and operations expenses consist primarily of setup
       costs for new subscribers, telecommunication costs, and wages of network
       operations and customer support personnel. Connectivity costs include (i)
       fees paid to telephone companies for subscribers' dial-up connections to
       our network and (ii) fees paid to backbone providers for connections from
       our network to the Internet.

            Sales and marketing expenses consist primarily of creative, media
       and production costs, and call center employee wages. These expenses
       include the cost of our television and billboard campaigns and other
       advertising. Advertising costs are expensed as incurred.

            General and administrative expenses consist primarily of accounting
       and administrative wages, professional services, rent and other general
       business expenses.

            Depreciation is computed using the straight line method over the
       estimated useful life of the assets. Our data communications equipment,
       computers, data server and office equipment are depreciated over three
       years. We depreciate our furniture, fixtures and leasehold improvements
       over five years. Acquisition costs are allocated among acquired
       subscriber bases and goodwill, both of which are amortized over three
       years. Amortization of acquired subscriber bases and goodwill will
       increase substantially during fiscal 2000 due to the acquisition of
       NeoSoft and other recent acquisitions.

       Our business is not subject to any significant seasonal influences.


                                       8
<PAGE>   9



RESULTS OF OPERATIONS

THREE MONTHS ENDED SEPTEMBER 30, 1999 COMPARED TO THREE MONTHS ENDED SEPTEMBER
30, 1998

         The following table sets forth certain unaudited financial data for the
three months ended September 30, 1999 and 1998. All amounts for the three months
ended September 30, 1998 have been restated to reflect the poolings of interests
with CompuNet and CyberRamp. Operating results for any period are not indicative
of results for any future period. Dollar amounts are shown in thousands (except
per share data and subscriber count).

<TABLE>
<CAPTION>

                                              Three Months Ended           Three Months Ended
                                              September 30, 1999           September 30, 1998
                                           ------------------------     ------------------------
                                                            % of                         % of
                                             (000's)      Revenues       (000's)       Revenues
                                           ----------    ----------     ----------    ----------

<S>                                        <C>           <C>            <C>           <C>
STATEMENT OF OPERATIONS DATA:

REVENUES:
       Access                              $    4,468          79.9%    $    3,595          86.7%
       Business services                          917          16.4%           523          12.6%
       Other                                      207           3.7%            29           0.7%
                                           ----------    ----------     ----------    ----------
              Total                             5,592         100.0%         4,147         100.0%
                                           ----------    ----------     ----------    ----------

OPERATING COSTS AND EXPENSES:
       Connectivity and operations              3,151          56.3%         2,048          49.4%
       Sales and marketing                      1,498          26.8%           851          20.5%
       General and administrative               1,387          24.8%           838          20.2%
       Depreciation and amortization            1,416          25.3%           482          11.6%
                                           ----------    ----------     ----------    ----------
              Total                             7,452         133.3%         4,219         101.7%
                                           ----------    ----------     ----------    ----------

OPERATING LOSS                                 (1,860)        (33.3)%          (72)         (1.7)%
INTEREST INCOME (EXPENSE), NET                     37           0.7%          (109)         (2.6)%
                                           ----------    ----------     ----------    ----------

LOSS BEFORE INCOME TAX                         (1,823)        (32.6)%         (181)         (4.4)%
INCOME TAX EXPENSE                                 --           0.0%           (10)         (0.2)%
                                           ----------     ----------    ----------

NET LOSS                                   $   (1,823)        (32.6)%   $     (191)         (4.6)%
                                           ==========    ==========     ==========    ==========

NET LOSS PER COMMON
SHARE:

       BASIC                               $    (0.26)                  $    (0.05)
                                           ==========                   ==========

       DILUTED                             $    (0.26)                  $    (0.05)
                                           ==========                   ==========

WEIGHTED AVERAGE COMMON
SHARES OUTSTANDING:

       BASIC                                    7,009                        3,915

       DILUTED                                  7,009                        3,915

OTHER DATA:
Subscribers at end of period                  105,000                       64,200
</TABLE>



                                       9
<PAGE>   10

       Total revenue. Total revenue increased by $1.5 million, or 34.8%, to $5.6
million for the three months ended September 30, 1999, from $4.1 million for the
three months ended September 30, 1998. The majority of the increase in total
revenue is attributable to the increase in access revenue of $874,000, or 24.3%,
to $4.5 million for the three months ended September 30, 1999, from $3.6 million
for the same period in the prior year. The increase in access revenue is
attributable to an increase in the number of dial-up subscribers from 64,200 at
September 30, 1998, to 105,000 at September 30, 1999. Business services revenue
increased by $394,000, or 75.3%, to $917,000 for the three months ended
September 30, 1999, from $523,000 for the same period in the prior year. The
increase in business services revenue is primarily due to the NeoSoft
acquisition on June 30, 1999. Over half of NeoSoft's total revenue relates to
business services. Other revenue increased by $177,000, to $207,000 for the
three months ended September 30, 1999, from $30,000 for the same period in the
prior year. The increase in other revenue is due to sales tax refunds related to
NeoSoft operations and other miscellaneous revenue realized by NeoSoft.

       Connectivity and operations. Connectivity and operations expense
increased by $1.1 million, or 53.8%, to $3.2 million for the three months ended
September 30, 1999 from $2.0 million for the three months ended September 30,
1998. As a percentage of revenue, connectivity and operations expense increased
to 56.3% for the three months ended September 30, 1999, from 49.4% for the same
period in the prior year. The increase as a percentage of revenue is primarily
due to the effects of recent acquisitions. After an acquisition, there is some
duplication of inbound telephone connectivity and Internet backbone connectivity
during the transition period.

       Sales and marketing. Sales and marketing expense increased by $648,000,
or 76.1%, to $1.5 million for the three months ended September 30, 1999,
compared to $851,000 for the same period in the prior year. During the three
months ended September 30, 1998, our marketing expenses were limited to an
advertising campaign in the North Texas area only, our primary market during
that time. For the three months ended September 30, 1999, our marketing campaign
included television and billboard advertisements in a total of nine markets.
Total sales and marketing expense of $1.5 million for the period ended September
30, 1999 included $1.2 million in television, print and billboard advertising.
Approximately half of the $1.2 million in television, print and billboard
advertising incurred for the quarter ended September 30, 1999 related to new
markets outside of the North Texas area.

       General and administrative. General and administrative expense increased
by $549,000, or 65.5%, to $1.4 million for the three months ended September 30,
1999, from $838,000 for the three months ended September 30, 1998. General and
administrative expense as a percentage of total revenue increased to 24.8% for
the three months ended September 30, 1999, from 20.2% for the same period in the
prior year, primarily due to administrative support related to our growth
strategy.

       Depreciation and amortization. Depreciation and amortization increased by
$934,000, or 194%, to $1.4 million for the three months ended September 30,
1999, from $482,000 for the same period in the prior year. The increase is due
to amortization of recently acquired subscriber bases and related goodwill along
with additional depreciation expense related to routine upgrades of our network
facilities. Approximately $724,000 of the total increase in depreciation and
amortization relates to amortization of the subscriber base and goodwill related
to the NeoSoft purchase which closed on June 30, 1999, and approximately
$160,000 relates to amortization due to other recent acquisitions.

       Interest income and expense. We realized $37,000 of interest income
during the three months ended September 30, 1999, compared to interest expense
of $109,000 for the same period in the prior year. During the three months ended
September 30, 1998, several notes payable to shareholders were outstanding,
resulting in interest expense of $109,000 for the period. These notes payable
were retired with part of the proceeds from our initial public offering in
December 1998.



                                       10
<PAGE>   11




LIQUIDITY AND CAPITAL RESOURCES

       We have financed our operations to date primarily through (i) public and
private sales of equity securities, (ii) loans from shareholders and third
parties and (iii) revenue collections. We completed an initial public offering
in December 1998 and received net proceeds of approximately $19.8 million. After
the offering, we repaid approximately $2.1 million in shareholder notes and
certain other indebtedness. As of September 30, 1999, cash and cash equivalents
on hand totaled $3.3 million.

       Cash used in operating activities totaled $917,000 for the three months
ended September 30, 1999, compared to cash used in operating activities of
$158,000 for the same period in the prior year. During the three months ended
September 30, 1999, sales and marketing expenses totaled $1.5 million, as
compared to only $851,000 for the same period in the prior year. Increased
connectivity costs and general and administrative expenditures related to our
growth strategy also contributed to additional cash used in operations for the
three months ended September 30, 1999, as compared to the same period a year
ago.

       Cash used in investing activities totaled $1.7 million for the three
months ended September 30, 1999, and consisted of $1.6 million in subscriber
acquisition costs and routine purchases of property and equipment to expand and
upgrade our network.

       Cash provided by financing activities totaled $99,000 for the three
months ended September 30, 1999 and consisted of proceeds of $273,000 from the
exercise of stock options by option holders less payments of $174,000 to service
long-term obligations.

       We estimate that cash on hand of $3.3 million at September 30, 1999 along
with anticipated revenue collections will be sufficient for meeting our working
capital needs for fiscal 2000 with regard to continuing operations in existing
markets. Additional financing will be required to fund expansion through
acquisitions and marketing.

       The availability of additional capital from public debt and equity
markets is currently limited due to a decline in stock prices for the entire
Internet sector. We are currently in discussions with various lenders concerning
a possible credit facility, but there can be no assurance that we will enter
into any facility, and if so, on what terms. In addition, we are currently
investigating capital financing arrangements to help fund a portion of equipment
purchases during the coming year which are estimated to total approximately $1.1
million. There can be no assurance that we will enter into any such capital
equipment financing, and if so, on what terms.

       If additional capital financing arrangements, including public or private
sales of debt or equity securities, or additional borrowings from commercial
banks, are insufficient or unavailable, or if we experience shortfalls in
anticipated revenues or increases in anticipated expenses, we will have to
modify our operations and growth strategies to match available funding. In such
case, it is likely that our advertising expenditures would be downscaled to a
level where positive cash flows are generated from operations. We have no long
term advertising commitments, and our scheduled television commercials may be
cancelled with less than two weeks notice.

YEAR 2000

         The Year 2000 issue relates to computer programs that use two digits
rather than four digits to define an applicable year. Software may recognize a
date as the year 1900 rather than the year 2000, which could result in system
failures or miscalculations, causing disruptions of operations. This could cause
a temporary inability to process transactions, send invoices, route our
subscribers' Internet traffic or engage in similar normal business activities.

         We have developed a Year 2000 Plan (the "Plan") which is designed to
address Year 2000 issues so that we will be prepared for any problems arising
from the arrival of the Year 2000. The Plan covers: (i) internally developed and
vendor supplied software products which are provided to our subscribers; (ii)
network software and hardware, including routing and server components and
telephony systems; (iii) network operations and network support systems; (iv)
software and hardware components used by our customer care and sales
departments; and (v) other office infrastructure components. Additionally, the
Plan is designed to identify and assess our third party network service
providers and major vendors ("Third Party Systems") in order to develop and
implement action and contingency plans where appropriate in connection with
these Third Party Systems.


                                       11
<PAGE>   12


     For the internal systems described above, the Plan requires that we

     1)  investigate our internal software and hardware components in order to
         assess the current state of Year 2000 readiness,

     2)  prepare an evaluation of the resources necessary to upgrade our
         components to become Year 2000 ready,

     3)  develop and execute action plans to procure the necessary resources and
         implement fixes to the problems that exist,

     4)  re-evaluate the upgraded components, and

     5)  repeat steps 2 through 4, if necessary.

     For our Third Party Systems, the plan requires that we

     1)  investigate the products and services provided by Third Party systems
         in order to assess the current state of Year 2000 readiness with
         respect to these external suppliers, including a survey of the publicly
         available statements issued by vendors of those systems,

     2)  inquire of our Third Party Systems as to their plans to remedy any
         issues outstanding relating to Year 2000 issues,

     3)  evaluate alternatives to existing Third Party Systems relationships in
         cases where Year 2000 readiness is questionable, and

     4)  take the appropriate steps to become Year 2000 ready.

In addition to the preparation work on both internal and external systems, the
Plan also details contingency plans which are designed to deal with
unanticipated Year 2000 issues, should they arise.

State of Readiness

         We supply our subscribers with a software package that, among other
things, allows subscribers to access our services. The software package consists
of internally developed software which is bundled with third party software
(collectively, the "Installation Package"). We believe that the current version
of our software package is Year 2000 ready. In addition, we believe that
substantially all of our customer base is presently using a version of the
Installation Package that is Year 2000 ready.

         Our network components consist primarily of routers and servers.
Routers function as network traffic coordinators and determine the paths that
individual packets of data will take to get from point A to point B. The primary
component of router functionality is the software which manages the data
traffic. We believe that the current version of the software within the routers
is Year 2000 ready. Servers act as the processing centers for the management of
information. Our servers generally utilize the UNIX operating system or
internally developed systems, all of which we believe are currently Year 2000
ready. During the quarter ended September 30, 1999, we upgraded the software
components of our telephone system, which manages all inbound and outbound phone
and fax capabilities, and we believe it is currently Year 2000 ready.

         Our NOCC monitors the internal and external network operations using
specialized software provided by Third Party Systems. Our network operations
software has been upgraded and we believe that it is currently Year 2000
compliant.

         Our customer care and sales departments utilize standardized desktop
computers to interact with our internal data systems. We do not believe that
significant issues exist relating to our customer care and sales departments'
systems. Other office infrastructure includes, among others, our administrative
computer systems, fax machines and copiers. We do not expect significant Year
2000 issues to exist with these devices.

Costs

         We have incurred expenses of approximately $75,000 in connection with
the implementation of the Plan. We estimate that an additional $10,000 to
$15,000 will be incurred through the remainder of the execution of the Plan.


                                       12
<PAGE>   13



Risks

         Our failure to correct a material Year 2000 problem could result in a
complete failure or degradation of the performance of our network or other
systems, including the disruption of operations, a temporary inability to
process transactions, send invoices or engage in similar normal business
activities. Presently, however, we believe that our most reasonably likely worst
case scenario related to the Year 2000 is associated with potential concerns
with third party services. Specifically, we are heavily dependent on a
significant number of third party vendors to provide network services. A
significant Year 2000-related disruption of the network services provided by
Third Party Systems could cause subscribers to seek alternative providers or
cause an unmanageable burden on operations, liquidity and financial condition.
We are not presently aware of any Third Party Systems issue that is likely to
result in such a disruption. Although there is inherent uncertainty in the Year
2000 issue, we expect that as we progress with the Plan, the level of
uncertainty about the impact of the Year 2000 issue will be reduced and we
should be better positioned to identify the nature and extent of material risk
as a result of any Year 2000 disruptions.

Contingency Plans

         We believe that we have assessed the risks involved with the Year 2000
issue and have established procedures and processes to minimize any effect of an
unidentified or Third Party Systems created Year 2000 problem. These plans
include providing personnel on duty during the change-over specifically trained
to deal with software failures and Third Party Systems failures.

         The estimates and conclusions herein contain forward-looking statements
and are based on our best estimates of future events. Our expectations about
risks, future costs and the timely completion of our Year 2000 efforts are
subject to uncertainties that could cause actual results to differ materially
from what has been discussed above. Factors that could influence risks, amount
of future costs and the effective timing of remediation efforts include our
success in identifying and correcting potential Year 2000 issues and the ability
of Third Party Systems to appropriately address their Year 2000 issues.

"SAFE HARBOR" STATEMENT

       The following "Safe Harbor" Statement is made pursuant to the Private
Securities Litigation Reform Act of 1995. Certain of the Statements contained in
the body of this Report are forward-looking statements (rather than historical
facts) that are subject to risks and uncertainties that could cause actual
results to differ materially from those described in the forward-looking
statements. With respect to such forward-looking statements, we seek the
protections afforded by the Private Securities Litigation Reform Act of 1995.
These risks include, without limitation, (1) that we will not retain or grow our
subscriber base, (2) that we will fail to be competitive with existing and new
competitors, (3) that we will not be able to sustain our current growth, (4)
that we will not adequately respond to technological developments impacting the
Internet, and (5) that needed financing will not be available to us if and as
needed. This list is intended to identify certain of the principal factors that
could cause actual results to differ materially from those described in the
forward-looking statements included elsewhere herein. These factors are not
intended to represent a complete list of all risks and uncertainties inherent in
our business, and should be read in conjunction with the more detailed
cautionary statements included in our other publicly filed reports and
documents.




                                       13
<PAGE>   14




PART II - OTHER INFORMATION

ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K

         (a) Exhibits

             2.1  Agreement and Plan of Merger dated as of September 12, 1999 by
                  and between Internet America, Inc., GEEK Houston II, Inc.,
                  PDQ.Net, Incorporated, William E. Ladin, Jr. and J.N. Palmer
                  Family Partnership, incorporated by reference A to the
                  preliminary proxy statement and definitive proxy statement
                  filed with the Securities and Exchange Commission on October
                  7, 1999 and October 19, 1999, respectively. (File No.
                  000-25147)

             3.1  Articles of Incorporation, as amended, incorporated by
                  reference to Exhibit Nos. 3.1 and 3.2 on Form SB-2, as
                  amended, initially filed with the Securities and Exchange
                  Commission on July 21, 1998 (File No. 333-59527).

             3.2  By-Laws, as amended, incorporated by reference to Exhibit Nos.
                  3.3 and 3.4 of the Company's Registration Statement on Form
                  SB-2, as amended, initially filed with the Securities and
                  Exchange Commission on July 21, 1998 (File No. 333-59527).

             3.3  Second Amendment to the Bylaws of Internet America, Inc. dated
                  as of September 13, 1999.*

             4.1  Specimen Common Stock Certificate, incorporated by reference
                  to Exhibit No. 4.1 on Form SB-2, as amended, initially filed
                  with the Securities and Exchange Common on July 21, 1998 (File
                  No. 333-59527)

             11.  Computation of earnings per share (1)

             27.  Financial Data Schedule (2)

         (b) Reports on Form 8-K

             On September 27, 1999, we filed a Current Report on Form 8-K to
             report that, on September 13, 1999, we announced a definitive
             agreement to acquire all of the outstanding shares of PDQ.Net,
             Incorporated, a Houston-based ISP ("PDQ"), in a stock-for-stock
             transaction. The transaction is contingent upon approval of
             Internet America and PDQ shareholders and is expected to be
             accounted for as a purchase.


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

*        Previously filed as Exhibit 3.3 to the Original Form 10-QSB for the
         quarterly period ended September 30, 1999, initially filed with the
         Securities and Exchange Commission on November 15, 1999

(1)      See note 2 to condensed financial statements

(2)      Filed herewith




                                       14
<PAGE>   15



                                   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.



                                     INTERNET AMERICA, INC.
                                     (Registrant)

Date:  5/15/00                      By: /s/ Michael T. Maples
                                       -----------------------------------------
                                    Michael T. Maples
                                    President and Chief Executive Officer

Date:  5/15/00                      By: /s/ James T. Chaney
                                       -----------------------------------------
                                    James T. Chaney
                                    Vice President and Chief Financial Officer





                                       15
<PAGE>   16





                                INDEX TO EXHIBITS


<TABLE>
<CAPTION>
Exhibit No.       Description
--------------    -----------
<S>               <C>
             2.1  Agreement and Plan of Merger dated as of September 12, 1999 by
                  and between Internet America, Inc., GEEK Houston II, Inc.,
                  PDQ.Net, Incorporated, William E. Ladin, Jr. and J.N. Palmer
                  Family Partnership, incorporated by reference A to the
                  preliminary proxy statement and definitive proxy statement
                  filed with the Securities and Exchange Commission on October
                  7, 1999 and October 19, 1999, respectively. (File No.
                  000-25147)

             3.1  Articles of Incorporation, as amended, incorporated by
                  reference to Exhibit Nos. 3.1 and 3.2 on Form SB-2, as
                  amended, initially filed with the Securities and Exchange
                  Commission on July 21, 1998 (File No. 333-59527).

             3.2  By-Laws, as amended, incorporated by reference to Exhibit Nos.
                  3.3 and 3.4 of the Company's Registration Statement on Form
                  SB-2, as amended, initially filed with the Securities and
                  Exchange Commission on July 21, 1998 (File No. 333-59527).

             3.3  Second Amendment to the Bylaws of Internet America, Inc. dated
                  as of September 13, 1999.*

             4.1  Specimen Common Stock Certificate, incorporated by reference
                  to Exhibit No. 4.1 on Form SB-2, as amended, initially filed
                  with the Securities and Exchange Common on July 21, 1998 (File
                  No. 333-59527).

             12.  Computation of earnings per share (1)

             27.  Financial Data Schedule (2)
</TABLE>


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

*        Previously filed as Exhibit 3.3 to the Original Form 10-QSB for the
         quarterly period ended September 30, 1999, initially filed with the
         Securities and Exchange Commission on November 15, 1999

(1)      See note 2 to condensed financial statements

(2)      Filed herewith