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Intangible Assets
 6 Months Ended
Jun. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets
Intangible Assets
Intangible assets consist of the following (in thousands):
 
 
June 30,
2013
 
December 31,
2012
Internet domain names and technology
$
2,768

 
$
2,805

Accumulated amortization
(2,113
)
 
(1,819
)
Total
$
655

 
$
986



Intangible assets have a useful life of 3 to 5 years. For the three months ended June 30, 2013 and 2012, amortization expense was $141,000 and $88,000, respectively. For the six months ended June 30, 2013 and 2012, amortization expense was $298,000 and $176,000, respectively.
Future expected amortization expense related to intangible assets at June 30, 2013 is as follows (in thousands):
 
Remainder of 2013
$
284

2014
217

2015
154

Total
$
655



The expected amortization expense is an estimate. Actual amounts of amortization expense may differ from estimated amounts due to additional intangible asset acquisitions, impairment of intangible assets, accelerated amortization of intangible assets and other events.