<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from Form 10-Q
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<S> <C> <C>
<PERIOD-TYPE> 12-MOS 9-MOS
<FISCAL-YEAR-END> DEC-31-1999 DEC-31-2000
<PERIOD-START> JAN-01-1999 JAN-01-2000
<PERIOD-END> DEC-31-1999 SEP-30-2000
<CASH> 578,560 955,522
<SECURITIES> 0 19,762,530
<RECEIVABLES> 791,403 3,504,873
<ALLOWANCES> (50,000) (121,035)
<INVENTORY> 0 0
<CURRENT-ASSETS> 6,138,477 29,335,539
<PP&E> 2,610,678 7,229,581
<DEPRECIATION> (1,308,310) (1,921,141)
<TOTAL-ASSETS> 27,162,922 44,275,379
<CURRENT-LIABILITIES> 7,778,558 14,285,923
<BONDS> 0 0
15,626,726 0
0 0
<COMMON> 52,192 179,435
<OTHER-SE> 1,748,408 29,527,032
<TOTAL-LIABILITY-AND-EQUITY> 27,162,922 44,275,379
<SALES> 0 0
<TOTAL-REVENUES> 3,241,568 8,273,814
<CGS> 2,326,688 3,516,226
<TOTAL-COSTS> 17,175,114 35,051,271
<OTHER-EXPENSES> 0 0
<LOSS-PROVISION> 30,000 148,681
<INTEREST-EXPENSE> 435,058 139,106
<INCOME-PRETAX> (16,731,863) (33,365,713)
<INCOME-TAX> 0 0
<INCOME-CONTINUING> (16,731,863) (33,365,713)
<DISCONTINUED> 0 0
<EXTRAORDINARY> 0 0
<CHANGES> 0 0
<NET-INCOME> (16,731,863) (33,365,713)
<EPS-BASIC> (5.46) (2.04)
<EPS-DILUTED> (5.46) (2.04)
</TABLE>