<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000

<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   YEAR                   YEAR                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1998             DEC-31-1999
<PERIOD-START>                             JAN-01-1997             JAN-01-1998             JAN-01-1999
<PERIOD-END>                               DEC-31-1997             DEC-31-1998             DEC-31-1999
<CASH>                                               0                   9,849                  10,660
<SECURITIES>                                         0                     150                  52,172
<RECEIVABLES>                                        0                   2,496                   6,882
<ALLOWANCES>                                         0                   (230)                   (291)
<INVENTORY>                                          0                      59                     825
<CURRENT-ASSETS>                                     0                  14,422                  77,084
<PP&E>                                               0                   5,188                  24,145
<DEPRECIATION>                                       0                   1,063                   4,760
<TOTAL-ASSETS>                                       0                  23,783                 274,174
<CURRENT-LIABILITIES>                                0                   8,744                  33,653
<BONDS>                                              0                   1,837                   5,409
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                  35,070                       0
<COMMON>                                             0                   6,559                 325,502
<OTHER-SE>                                           0                (28,427)                (96,289)
<TOTAL-LIABILITY-AND-EQUITY>                         0                  23,783                 274,174
<SALES>                                            604                   4,458                  15,486
<TOTAL-REVENUES>                                   604                   7,154                  36,955
<CGS>                                              515                   4,452                  18,883
<TOTAL-COSTS>                                      515                   5,849                  27,329
<OTHER-EXPENSES>                                     0                       0                       0
<LOSS-PROVISION>                                     0                     384                     617
<INTEREST-EXPENSE>                                 164                     211                     127
<INCOME-PRETAX>                                (4,766)                (24,745)                (75,943)
<INCOME-TAX>                                         0                       0                       0
<INCOME-CONTINUING>                            (4,766)                (24,745)                (75,943)
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                   (4,766)                (24,745)                (75,943)
<EPS-BASIC>                                     (1.83)                  (7.01)                  (5.80)
<EPS-DILUTED>                                   (1.83)                  (7.01)                  (5.80)


</TABLE>