| Cash and cash equivalents | |
| Accounts receivable | |
| Inventory | |
| Prepaid expenses and other assets | |
| Total current assets | |
| Property and equipment, net | |
| Total Assets | |
| Accounts payable | |
| Accrued expenses | |
| Deferred revenue | |
| Total current liabilities | |
| Deferred revenue, net of current portion | |
| Deferred rent, net of current portion | |
| Commitments and contingencies (Note 11) | |
| Preferred stock - $0.001 par value; 20,000,000 shares authorized; no shares issued and outstanding | |
| Common stock - $0.001 par value; 150,000,000 shares authorized; 103,609,419 and 100,580,849 shares issued and outstanding at June 30, 2011 and December 31, 2010, respectively | |
| Additional paid-in capital | |
| Accumulated deficit | |
| Total stockholders' equity | |
| Total Liabilities and Stockholders' Equity |