Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Accounting Policies [Abstract]

Schedule of Intangible Assets Deemed to have Definite Lives

The Company's intangible assets deemed to have definite lives are amortized over their estimated useful lives, on a straight-line basis as follows:

Customer and advertiser relationships	6 to 10 years
Developed technology and patents	5 years
Trademarks and tradenames	3 to 5 years
Service contracts and other	10 years