Accounting Policies (Intangible Assets and Impairments) (Narrative) (Details) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Impairment charges	$ 0	$ 0
Website and Software Development Costs
Finite-Lived Intangible Assets, Amortization Method	Intangible assets are comprised of website and software development costs, domain names and patents. We account for website and software development costs in accordance with ASC 350-50, Website Development Costs, and ASC 985-20, Costs of Software to Be Sold, Leased or Marketed. Pursuant to ASC 350-50 and 985-20, we capitalize internally developed website and software costs when the website or software under development has reached technological feasibility. We amortize these costs, typically over an estimated life of five years, using the larger of the amount calculated using the straight-line method or the amount calculated using the ratio between current period gross revenues and the total of current period gross revenues and estimated future gross revenues. At each balance sheet date, we evaluate the unamortized capitalized website and software costs compared to the net realizable value. We then write off the amount by which the unamortized capitalized website costs exceed its net realizable value. We account for domain names and patents in accordance with ASC 350-30, General Intangibles Other than Goodwill. We capitalize patent costs representing legal fees associated with filing patent applications and amortize them on a straight-line basis. We are in the process of evaluating our patents' estimated useful life and will begin amortizing the patents when they are brought to the market or otherwise commercialized.
Finite-Lived Intangible Assets, Average Useful Life, years	5
Domain Name
Finite-Lived Intangible Assets, Amortization Method	Intangible assets are comprised of website and software development costs, domain names and patents. We account for website and software development costs in accordance with ASC 350-50, Website Development Costs, and ASC 985-20, Costs of Software to Be Sold, Leased or Marketed. Pursuant to ASC 350-50 and 985-20, we capitalize internally developed website and software costs when the website or software under development has reached technological feasibility. We amortize these costs, typically over an estimated life of five years, using the larger of the amount calculated using the straight-line method or the amount calculated using the ratio between current period gross revenues and the total of current period gross revenues and estimated future gross revenues. At each balance sheet date, we evaluate the unamortized capitalized website and software costs compared to the net realizable value. We then write off the amount by which the unamortized capitalized website costs exceed its net realizable value. During the years ended December 31, 2012 and 2011, there were no impairment charges recorded. We account for domain names and patents in accordance with ASC 350-30, General Intangibles Other than Goodwill. We capitalize patent costs representing legal fees associated with filing patent applications and amortize them on a straight-line basis. We are in the process of evaluating our patents' estimated useful life and will begin amortizing the patents when they are brought to the market or otherwise commercialized.
Finite-Lived Intangible Assets, Average Useful Life, years	5
Patents
Finite-Lived Intangible Assets, Amortization Method	Intangible assets are comprised of website and software development costs, domain names and patents. We account for website and software development costs in accordance with ASC 350-50, Website Development Costs, and ASC 985-20, Costs of Software to Be Sold, Leased or Marketed. Pursuant to ASC 350-50 and 985-20, we capitalize internally developed website and software costs when the website or software under development has reached technological feasibility. We amortize these costs, typically over an estimated life of five years, using the larger of the amount calculated using the straight-line method or the amount calculated using the ratio between current period gross revenues and the total of current period gross revenues and estimated future gross revenues. At each balance sheet date, we evaluate the unamortized capitalized website and software costs compared to the net realizable value. We then write off the amount by which the unamortized capitalized website costs exceed its net realizable value. During the years ended December 31, 2012 and 2011, there were no impairment charges recorded. We account for domain names and patents in accordance with ASC 350-30, General Intangibles Other than Goodwill. We capitalize patent costs representing legal fees associated with filing patent applications and amortize them on a straight-line basis. We are in the process of evaluating our patents' estimated useful life and will begin amortizing the patents when they are brought to the market or otherwise commercialized.
Finite-Lived Intangible Assets, Average Useful Life, years	20

$ 0

Finite-Lived Intangible Assets, Amortization Method

Intangible assets are comprised of website and software development costs, domain names and patents. We account for website and software development costs in accordance with ASC 350-50, Website Development Costs, and ASC 985-20, Costs of Software to Be Sold, Leased or Marketed. Pursuant to ASC 350-50 and 985-20, we capitalize internally developed website and software costs when the website or software under development has reached technological feasibility. We amortize these costs, typically over an estimated life of five years, using the larger of the amount calculated using the straight-line method or the amount calculated using the ratio between current period gross revenues and the total of current period gross revenues and estimated future gross revenues. At each balance sheet date, we evaluate the unamortized capitalized website and software costs compared to the net realizable value. We then write off the amount by which the unamortized capitalized website costs exceed its net realizable value.

We account for domain names and patents in accordance with ASC 350-30, General Intangibles Other than Goodwill. We capitalize patent costs representing legal fees associated with filing patent applications and amortize them on a straight-line basis. We are in the process of evaluating our patents' estimated useful life and will begin amortizing the patents when they are brought to the market or otherwise commercialized.

Finite-Lived Intangible Assets, Average Useful Life, years

5

Finite-Lived Intangible Assets, Amortization Method

Intangible assets are comprised of website and software development costs, domain names and patents. We account for website and software development costs in accordance with ASC 350-50, Website Development Costs, and ASC 985-20, Costs of Software to Be Sold, Leased or Marketed. Pursuant to ASC 350-50 and 985-20, we capitalize internally developed website and software costs when the website or software under development has reached technological feasibility. We amortize these costs, typically over an estimated life of five years, using the larger of the amount calculated using the straight-line method or the amount calculated using the ratio between current period gross revenues and the total of current period gross revenues and estimated future gross revenues. At each balance sheet date, we evaluate the unamortized capitalized website and software costs compared to the net realizable value. We then write off the amount by which the unamortized capitalized website costs exceed its net realizable value. During the years ended December 31, 2012 and 2011, there were no impairment charges recorded.

We account for domain names and patents in accordance with ASC 350-30, General Intangibles Other than Goodwill. We capitalize patent costs representing legal fees associated with filing patent applications and amortize them on a straight-line basis. We are in the process of evaluating our patents' estimated useful life and will begin amortizing the patents when they are brought to the market or otherwise commercialized.