As of December 31,

2012

2011

Deferred income tax assets (liabilities):

Property and equipment

$

(54,443

)

$

(144,185

)

Deferred revenue

246,740

1,517,024

Accrued expenses

288,338

1,138,800

Share based compensation related

1,094,927

451,557

Other

546,636

275,650

Net operating loss carryforwards

19,816,443

18,509,210

21,938,641

21,748,056

Less valuation allowance

(21,938,641

)

(21,748,056

)

$

-

$

-