<ARTICLE> 5

                                                  
<PERIOD-TYPE>                   YEAR                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1999
<PERIOD-START>                             JAN-01-1998             JAN-01-1999
<PERIOD-END>                               DEC-31-1998             DEC-31-1999
<CASH>                                      43,293,995              76,374,571
<SECURITIES>                                         0                       0
<RECEIVABLES>                                  610,641                 792,625
<ALLOWANCES>                                         0                       0
<INVENTORY>                                          0                       0
<CURRENT-ASSETS>                               506,353               1,209,000
<PP&E>                                      20,100,403              22,415,972
<DEPRECIATION>                               4,200,122               7,338,602
<TOTAL-ASSETS>                              60,804,501              93,894,276
<CURRENT-LIABILITIES>                       11,345,381              10,485,653
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                       133,168                 173,991
<OTHER-SE>                                  42,342,025              74,824,638
<TOTAL-LIABILITY-AND-EQUITY>                60,804,501              93,894,276
<SALES>                                              0                       0
<TOTAL-REVENUES>                             9,257,025              15,103,517
<CGS>                                                0                       0
<TOTAL-COSTS>                               19,989,395              28,868,825
<OTHER-EXPENSES>                             9,128,705              13,084,852
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                   0                       0
<INCOME-PRETAX>                           (18,428,485)            (25,762,760)
<INCOME-TAX>                                         0                       0
<INCOME-CONTINUING>                       (18,428,485)            (25,762,760)
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                              (18,936,920)            (25,762,760)
<EPS-BASIC>                                     (1.55)                  (1.79)
<EPS-DILUTED>                                   (1.55)                  (1.79)