<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM QUARTERLY 
REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
FOR THE QUARTERLY PERIOD ENDED MARCH 31, 1999 AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1999             DEC-31-1998
<PERIOD-START>                             JAN-01-1999             JAN-01-1998
<PERIOD-END>                               MAR-31-1999             MAR-31-1998
<CASH>                                         364,199                       0
<SECURITIES>                                         0                       0
<RECEIVABLES>                                    5,458                       0
<ALLOWANCES>                                       806                       0
<INVENTORY>                                        282                       0
<CURRENT-ASSETS>                               374,821                       0
<PP&E>                                          73,964                       0
<DEPRECIATION>                                  29,626                       0
<TOTAL-ASSETS>                                 481,931                       0
<CURRENT-LIABILITIES>                           71,512                       0
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                         47                       0
<COMMON>                                           319                       0
<OTHER-SE>                                     403,665                       0
<TOTAL-LIABILITY-AND-EQUITY>                   481,931                       0
<SALES>                                              0                       0
<TOTAL-REVENUES>                                68,243                  29,826<F1>
<CGS>                                                0                       0
<TOTAL-COSTS>                                   29,180                  14,123<F1>
<OTHER-EXPENSES>                                64,867                  21,643<F1>
<LOSS-PROVISION>                                   949                   1,047
<INTEREST-EXPENSE>                                 315                     687
<INCOME-PRETAX>                               (25,889)                 (6,404)
<INCOME-TAX>                                         0                       0
<INCOME-CONTINUING>                           (25,804)                 (5,940)
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                  (25,889)                 (6,404)
<EPS-PRIMARY>                                   (0.82)                  (0.28)
<EPS-DILUTED>                                   (0.82)                  (0.28)
<FN>
<F1>CERTAIN AMOUNTS IN PRIOR YEARS ARE RECLASSIFIED TO CONFORM TO CURRENT YEAR
PRESENTATION.
</FN>
        

</TABLE>