Accounts receivable, (net of allowances for bad debts and customer credits of $513 and $540 at March 31, 2012 and December 31, 2011, respectively) Additional paid-in capital Cost of revenues, depreciation Advertising Accounts receivable, allowances for bad debts and customer credits Balance Sheet [Abstract] Balance Sheet (Parenthetical) [Abstract] Cash and cash equivalents Cash and cash equivalents, end of period Cash and cash equivalents, end of period Accounts receivable Prepaid expenses and other current assets Changes in assets and liabilities: Accounts payable Accrued expenses and other liabilities Commitments and Contingencies [Text Block] Common stock, authorized (in shares) Common stock, issued (in shares) Common stock, outstanding (in shares) Common stock, $0.001 par value; 200,000,000 shares authorized and 45,899,826 and 46,121,727 shares issued and outstanding at March 31, 2012 and December 31, 2011, respectively Cost of revenues (excludes depreciation of $32 and $55 for the three months ended March 31, 2012 and 2011, respectively) Total current liabilities Liabilities, Current Current liabilities: Deferred revenues Deferred Revenue, Current Basic and diluted income (loss) per common share Basic and diluted earnings (loss) per common share Share-based compensation Litigation settlements Gain (Loss) Related to Litigation Settlement General and administrative Gross profit Gross Profit Income Statement [Abstract] Income Statement (Parenthetical) [Abstract] Income (loss) from continuing operations Income (Loss) from Continuing Operations Attributable to Parent Income (loss) from continuing operations (in dollars per share) Discontinued operations, net (in dollars per share) Other non-current assets Intangible assets, net Goodwill Total liabilities Liabilities Total liabilities and stockholders' equity Liabilities and Stockholders' Equity Liabilities and Stockholders' Equity Liabilities and Stockholders' Equity Liabilities and Stockholders' Equity [Abstract] Long-term strategic investment Long-term Investments Net cash (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Cash flows from financing activities: Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from investing activities: Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from operating activities: Net income (loss) and comprehensive income (loss) Net income (loss) Net increase (decrease) in cash and cash equivalents Net decrease in cash and cash equivalents Technology support Interest and other income (expense), net Convertible note payable Operating income (loss) Operating Income (Loss) Net revenues: Basis of Presentation [Text Block] Other assets Preferred stock, authorized (in shares) Preferred stock, outstanding (in shares) Preferred stock, par value (in dollars per share) Property and equipment, net Provision for bad debts Change in short-term investment Payments to Acquire Investments Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Accumulated deficit Total revenues Sales Revenue, Net Other revenues Purchase Requests Sales and marketing Statement of Cash Flows [Abstract] Stockholders' equity: Total current assets Assets, Current Current assets: Total assets Assets Other non-current liabilities Share-Based Compensation [Text Block] Assets Assets Assets [Abstract] Deferred revenues Operating expenses: Total operating expenses Operating Expenses Basic and diluted earnings (loss) per common share: Non-current liabilities Income (loss) before income tax provision Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Cumulative Effects of Changes in Accounting Principles, Noncontrolling Interest Common stock, par value (in dollars per share) Total stockholders' equity Stockholders' Equity Attributable to Parent Income tax provision Preferred stock, $0.001 par value; 11,445,187 shares authorized; none outstanding Computation of Basic and Diluted Net Loss Per Share [Text Block] Discontinued operations Depreciation and amortization Depreciation Depletion And Amortization Commitments and contingencies (Note 9) Adjustments to reconcile net loss to net cash used in operating activities: Organization and Operations [Text Block] Accounts payable Accounts Payable, Current Accrued expenses and other current liabilities Proceeds from exercise of stock options Amendment Flag Current Fiscal Year End Date Document Period End Date Entity [Text Block] Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Public Float Entity Registrant Name Entity Central Index Key Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Period Focus Document Type Subsequent Events [Abstract] Prepaid Expenses and Other Current Assets Sum of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer. And, aggregate carrying amount, as of the balance sheet date, of current assets not separately presented elsewhere in the balance sheet. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer). Prepaid expenses and other current assets Related Party Transaction [Abstract] Commitments and Contingencies [Abstract] Organization and Operations [Abstract] Provision For Customer Credits Amount of the current period expense for credits applied to customer accounts. Provision for customer credits Selected Balance Sheet Accounts [Abstract] Basis of Presentation [Abstract] Acquisition Of Autotropolis Inc And Cyber Ventures Inc [Abstract] Computation of Basic and Diluted Net Loss Per Share [Abstract] Share-Based Compensation Note [Abstract] Share-Based Compensation [Abstract] Selected Balance Sheet Accounts [Text Block] Includes disclosure of the details underlying various balance sheet accounts. Discontinued Operations [Abstract] Patent Litigation Settlements [Abstract] Restricted cash Payment of contingent fee arrangement Taxes Depreciation And Amortization Amounts Depreciation and amortization Payment Of Contingent Fee Arrangement Payment of contingent fee arrangement Taxes Income Tax Disclosure [Text Block] Litigation Settlements Loss Contingency Settlement Agreement Report Classification Litigation Settlements Purchase of Autotropolis and Cyber Ventures Other Asset Impairment Charges Write-down of property and equipment Description Of New Accounting Pronouncements Not Yet Adopted Recent Accounting Pronouncements [Abstract] Repurchase of common stock Payments For Repurchase Of Equity