ACQUIRED INTANGIBLE ASSETS, NET

12 Months Ended

Dec. 31, 2011

ACQUIRED INTANGIBLE ASSETS, NET

ACQUIRED INTANGIBLE ASSETS, NET

8.ACQUIRED INTANGIBLE ASSETS, NET

The gross carrying amount, accumulated amortization and net carrying amount of the acquired intangible assets are as follows:

		December 31,
		2010			2011
Indefinite-lived:
Domain names		$	740		$	757
Trademarks		1,215			1,274
License of service provider		—			604
Definite-lived:
Domain names		153			836
Source code		1,651			1,752
Technology		2,837			4,579
Non-compete agreement		50			121
Total acquired intangible assets		6,646			9,923
Less:	Accumulated amortization
	Domain names	(9		)	(64		)
	Source code	(313		)	(572		)
	Technology	(479		)	(1,009		)
	Non-compete agreement	(34		)	(59		)
Accumulated amortization		(835		)	(1,704		)
Less:	Impairment loss
	Domain names	(265		)	(278		)
	Source code	—			(87		)
Accumulated impairment loss		(265		)	(365		)
Acquired intangible assets, net		$	5,546		$	7,854

Amortization expenses for the years ended December 31, 2009, 2010 and 2011 were $233, $563 and $834, respectively.  Amortization expenses for the years ending December 31, 2012, 2013, 2014, 2015 and 2016 and after are expected to be $ 1,110, $1,069, $1,021, $770 and $1,527, respectively.

The Group performs an impairment assessment on intangible assets with indefinite lives on December 31 of each year.  The fair value of intangible assets with indefinite lives were estimated based on the discounted value of estimated future cash flows.  An impairment loss of $256 and $87 for certain domain names and source code were recognized due to declining marketability and fair value of the intangible assets in 2009 and 2011 respectively.  There were no impairment charges for the year ended December 31, 2010.