Intangible Assets From Acquisitions

12 Months Ended

Dec. 31, 2011

Intangible Assets From Acquisitions [Abstract]

(10) Intangible Assets from Acquisitions

Intangible assets from acquisitions consisted of the following (in thousands):


	As of December 31, 2010
	Gross Carrying Amount ⁽¹⁾		Accumulated Amortization ⁽¹⁾			Net
Trademarks/domains	$	41,992	$	(40,415	)	$	1,577


	As of December 31, 2011
	Gross Carrying Amount ⁽¹⁾		Accumulated Amortization ⁽¹⁾			Net
Advertiser relationship	$	3,070	$	(897	)	$	2,173
Patents		318		(232	)		86
Distribution partner relationship		4,830		(1,177	)		3,653
Non-compete agreements		58		(43	)		15
Trademarks/domains		40,539		(40,130	)		409
Acquired technology		2,760		(1,008	)		1,752

	$	51,575	$	(43,487	)	$	8,088

⁽¹⁾	Excludes the original cost and accumulated amortization of fully-amortized intangible assets which were $41.7 million and $42.6 million at December 31, 2010 and 2011, respectively.

Amortizable intangible assets are amortized on a straight-line basis over their useful lives. Advertiser relationships, patents, distribution partner relationships, non-compete agreements, trademark/domains and acquired technology have weighted average useful life from date of purchase of 2.5 years, 1.0 year, 3.0 years, 1.0 year, 4.8 years and 2.0 years, respectively. Aggregate amortization expense incurred by the Company for the years ended December 31, 2009, 2010 and 2011, was approximately $5.5 million, $2.7 million and $5.5 million, respectively. Based upon the current amount of acquired intangible assets subject to amortization, the estimated amortization expense for the next five years is as follows: $4.7 million in 2012, $2.9 million in 2013, $433,000 in 2014, and $0 thereafter.