<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5

<S>                    <C>                     <C>                     <C>                     <C>                     <C>
<PERIOD-TYPE>          8-MOS                   YEAR                   YEAR                   3-MOS                   6-MOS
<FISCAL-YEAR-END>              DEC-31-1997       DEC-31-1998             DEC-31-1999             DEC-31-2000             DEC-31-200
0
<PERIOD-START>                 MAY-05-1997       JAN-01-1998             JAN-01-1999             JAN-01-2000             JAN-01-2
000
<PERIOD-END>                   DEC-31-1997       DEC-31-1998             DEC-31-1999             MAR-31-2000             JUN-30-200
0
<CASH>                                   0         2,491,151                 234,850                 401,992              25,042,
812
<SECURITIES>                             0                 0                       0                       0
0
<RECEIVABLES>                            0                 0                       0                       0
  0
<ALLOWANCES>                             0                 0                       0                       0
0
<INVENTORY>                              0                 0                       0                       0
  0
<CURRENT-ASSETS>                         0         2,511,458                 250,337                 427,869              25,142,62
3
<PP&E>                                   0           511,934                 862,815               1,043,466               1,279,
651
<DEPRECIATION>                           0          (78,208)               (296,802)               (373,415)               (447,134
)
<TOTAL-ASSETS>                           0         2,992,154                 973,505               1,334,489              26,278,
533
<CURRENT-LIABILITIES>                    0         1,030,545               1,128,005               2,589,576               2,500,79
0
<BONDS>                                  0                 0                       0                       0
  0
<PREFERRED-MANDATORY>                    0         4,493,145               4,534,816               4,545,234              37,004,37
8
<PREFERRED>                              0         5,375,151               5,737,651               5,737,651               5,771,
317
<COMMON>                                 0               168                     168                     168                     80
8
<OTHER-SE>                               0       (8,095,090)            (14,328,936)            (17,449,525)            (20,393,1
13)
<TOTAL-LIABILITY-AND-EQUITY>             0         2,992,154                 973,500               1,334,489              26,278,53
3
<SALES>                                  0                 0                       0                       0
  0
<TOTAL-REVENUES>                   232,316                 0                 268,868                       0
0
<CGS>                                    0                 0                       0                       0
  0
<TOTAL-COSTS>                            0                 0                       0                       0
0
<OTHER-EXPENSES>                 3,460,345         4,789,945               5,608,610               2,893,697               5,188,
751
<LOSS-PROVISION>                         0                 0                       0                       0
0
<INTEREST-EXPENSE>                       0            14,730                 356,869                 125,038                 360,
625
<INCOME-PRETAX>                (3,111,381)       (4,793,398)             (5,671,493)             (3,018,735)             (5,554,663
)
<INCOME-TAX>                             0                 0                       0                       0
  0
<INCOME-CONTINUING>            (3,228,029)       (4,789,945)             (5,339,742)             (2,893,697)             (5,194,008
)
<DISCONTINUED>                           0                 0                       0                       0
  0
<EXTRAORDINARY>                          0                 0                       0                       0
0
<CHANGES>                                0                 0                       0                       0
  0
<NET-INCOME>                   (3,111,381)       (4,912,459)             (6,630,016)             (3,200,996)             (7,452,143
)
<EPS-BASIC>                       (369.35)          (518.15)                (787.04)                (379.99)                (396.
12)
<EPS-DILUTED>                            0                 0                       0                       0
0


</TABLE>