INTANGIBLE ASSETS, NET

12 Months Ended

Dec. 31, 2013

INTANGIBLE ASSETS, NET

Note 6    INTANGIBLE ASSETS, NET

The following table summarizes the Company’s carrying amount of intangible assets, net (in thousands):

	December 31, 2012
	Gross Carrying Amount		Accumulated Amortization(*)			Net
Customer, affiliate, and advertiser related relationships	$	162,389	$	(99,996	)	$	62,393
Developed technology and patents		270,485		(198,851	)		71,634
Trade names, trademarks, and domain names		50,382		(30,436	)		19,946
Total intangible assets, net	$	483,256	$	(329,283	)	$	153,973

	December 31, 2013
	Gross Carrying Amount		Accumulated Amortization(*)			Net
Customer, affiliate, and advertiser related relationships	$	293,612	$	(87,794	)	$	205,818
Developed technology and patents		261,435		(120,936	)		140,499
Trade names, trademarks, and domain names		107,381		(35,890	)		71,491
Total intangible assets, net	$	662,428	$	(244,620	)	$	417,808

(*) Cumulative foreign currency translation adjustments, reflecting movement in the currencies of the underlying entities, increased total intangible assets by approximately $19 million as of both December 31, 2012 and 2013.

The intangible assets have estimated useful lives as follows:

• Customer, affiliate, and advertiser related relationships—two to eight years;

• Developed technology and patents—one year to eight years; and

• Trade names, trademarks, and domain names—one year to an indefinite life.

The Company recognized amortization expense of intangible assets of approximately $118 million, $105 million, and $97 million for 2011, 2012, and 2013, respectively, including $84 million, $70 million, and $52 million, respectively, included in cost of revenue-other. Based on the current amount of intangibles subject to amortization, the estimated amortization expense for each of the succeeding years is as follows: 2014: $107 million; 2015: $85 million; 2016: $60 million; 2017: $55 million; 2018: $43 million; and cumulatively thereafter: $51 million.