DOUBLECLICK INC.
    KEY PERFORMANCE INDICATORS
    (UNAUDITED)

    $ IN MILLIONS                                        1998
                                    Q1                Q2         Q3        Q4

    1  TOTAL ADS SERVED,
        QUARTER (BILLIONS)         5.0               6.8        8.2      14.0
       TOTAL ADS SERVED,
        FINAL MONTH (BILLIONS)     1.9               2.4        3.3       5.3
       ADS PER DAY,
        FINAL MONTH (MILLIONS)      62                81        108       172
       % GROWTH                    90%               30%        33%       59%

    2  # OF ADVERTISERS          1,400             1,800      2,200     2,300
       # CHANGE                    500               400        400       100
       KEY ADVERTISER RETENTION    83%               88%        93%       92%

    3  # SITES- TOTAL DART       1,700             2,900      4,200     6,400
       # CHANGE                  1,070             1,200      1,300     2,200
       % CHANGE                   169%               71%        45%       52%
       # PUBLISHERS- TOTAL DART    220               320        440       570
       # CHANGE                    120               100        120       130
       % CHANGE                   120%               45%        38%       30%

    4  # SITES- NETWORK TOTAL      650               840        930     1,320
       # CHANGE                    N/A               190         90       390
       % CHANGE                    N/A               29%        11%       42%
       # PUBLISHERS- NETWORK TOTAL 170               230        270       340
       # CHANGE                     90                60         40        70
       % CHANGE                   100%               35%        17%       26%

    5  UNIQUE USERS (MILLIONS/ MO.)
       DOUBLECLICK NETWORK WORLDWIDE35                40         44        48
       # GROWTH                     15                 5          4         4

    6  TOTAL COMPANY HEADCOUNT     248               311        373       482
       % GROWTH                    34%               25%        20%       29%

    7  REVENUE- $ MILLIONS       $13.0             $17.3      $20.8     $29.1
       % GROWTH                    19%               33%        20%       40%

    8  DART REVENUE (INCL. NETWORK)-
        $ MILLIONS      DID NOT REPORT    DID NOT REPORT       $3.3      $4.9
       % OF TOTAL REVENUE          N/A               N/A        16%       17%
       % OF TOTAL GROSS PROFIT     N/A               N/A        37%       42%

    9  INTERNATIONAL REVENUE-
        $ MILLIONS      DID NOT REPORT    DID NOT REPORT       $2.5      $4.1
       % OF TOTAL REVENUE          N/A               N/A        12%       14%

    10  ALTAVISTA REVENUES        $6.6              $8.6       $9.2     $12.9
        % REVENUE                  51%               49%        44%       44%
        % OF GROSS PROFIT          45%               43%        38%       37%

    11  SPONSORSHIP REVENUES      $1.2              $2.6       $3.5      $5.5
        % REVENUE                   9%               15%        17%       19%

    12  GROSS MARGIN %           32.0%             32.2%      32.8%     33.3%
        CHANGE %                  1.3%              0.2%       0.6%      0.5%
        CHANGE- BASIS POINTS       130                20         60        50

    13  OPERATING EXPENSES        $9.0             $11.1      $12.2     $14.9
        OPERATING LOSS          $(4.8)            $(5.5)     $(5.4)    $(5.2)
        OPERATING MARGIN %        -37%              -32%       -26%      -18%
        CHANGE- BASIS POINTS     (210)               550        560       840

    14  EARNINGS PER SHARE     $(0.31)           $(0.28)    $(0.28)   $(0.25)
        NET MARGIN %              -34%              -27%       -23%      -15%
SOURCE: DoubleClick Inc.