<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the December
31, 1998 and 1999 financial statements of the Company and is qualified in its
entirety by reference to such financial statements.
</LEGEND>
<RESTATED>
<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> MAR-31-1997 DEC-31-1998 DEC-31-1999
<CASH> 0 4,137,628 22,727,687
<SECURITIES> 0 0 0
<RECEIVABLES> 0 5,726 19,540
<ALLOWANCES> 0 0 0
<INVENTORY> 0 0 0
<CURRENT-ASSETS> 0 4,226,726 22,879,118
<PP&E> 0 2,507,297 2,865,331
<DEPRECIATION> 0 1,461,102 2,076,303
<TOTAL-ASSETS> 0 5,446,035 25,620,233
<CURRENT-LIABILITIES> 0 1,179,953 1,492,406
<BONDS> 0 0 0
0 0 0
0 24,466,659 45,859,143
<COMMON> 0 2,159 2,466
<OTHER-SE> 0 (25,132,693) (20,241,376)
<TOTAL-LIABILITY-AND-EQUITY> 0 5,446,035 25,620,233
<SALES> 0 360,000 1,104,000
<TOTAL-REVENUES> 0 360,000 1,104,000
<CGS> 0 0 0
<TOTAL-COSTS> 0 0 0
<OTHER-EXPENSES> 8,063,507 7,203,675 8,996,208
<LOSS-PROVISION> 0 0 0
<INTEREST-EXPENSE> 164,321 115,295 110,640
<INCOME-PRETAX> (7,947,426) (7,168,043) (8,874,057)
<INCOME-TAX> 0 360,000 60,000
<INCOME-CONTINUING> (7,947,426) (7,528,043) (8,934,057)
<DISCONTINUED> 0 0 0
<EXTRAORDINARY> 0 0 0
<CHANGES> 0 0 0
<NET-INCOME> (7,947,426) (7,528,043) (8,934,057)
<EPS-BASIC> (4.01) (3.65) (3.75)
<EPS-DILUTED> (4.01) (3.65) (3.75)
</TABLE>