<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<S> <C> <C>
<PERIOD-TYPE> YEAR 6-MOS
<FISCAL-YEAR-END> DEC-31-1999 DEC-31-2000
<PERIOD-START> JAN-01-1999 JAN-01-2000
<PERIOD-END> DEC-31-1999 JUN-30-2000
<CASH> 20,316 11,368,052
<SECURITIES> 0 0
<RECEIVABLES> 3,751,001 4,171,731
<ALLOWANCES> 295,000 628,000
<INVENTORY> 0 0
<CURRENT-ASSETS> 3,775,479 15,603,055
<PP&E> 2,391,736 3,034,064
<DEPRECIATION> 1,401,456 1,708,787
<TOTAL-ASSETS> 4,981,281 17,101,513
<CURRENT-LIABILITIES> 6,112,892 7,932,589
<BONDS> 0 0
0 0
13,637,995 28,525,116
<COMMON> 522 541
<OTHER-SE> (15,159,184) (19,671,063)
<TOTAL-LIABILITY-AND-EQUITY> 4,981,281 17,101,513
<SALES> 6,911,675 5,826,138
<TOTAL-REVENUES> 10,301,523 7,963,880
<CGS> 616,184 375,031
<TOTAL-COSTS> 2,629,684 1,903,307
<OTHER-EXPENSES> 15,441,340 11,025,137
<LOSS-PROVISION> 207,000 333,000
<INTEREST-EXPENSE> 28,380 73,694
<INCOME-PRETAX> (7,618,281) (4,850,256)
<INCOME-TAX> 3,753 6,769
<INCOME-CONTINUING> (7,622,034) (4,857,025)
<DISCONTINUED> 0 0
<EXTRAORDINARY> 0 0
<CHANGES> 0 0
<NET-INCOME> (7,622,034) (4,857,025)
<EPS-BASIC> (1.16) (0.69)
<EPS-DILUTED> (1.16) (0.69)
</TABLE>