Amortization on the intangible assets is computed using the straight-line method over the estimated lives of the assets, which are six years and three years, respectively, for the member list and other intangible assets, including content, core technology and data acquisition costs. Amortizable intangible assets as of December 31, 2014 and 2013 are as follows:



	Cost		Accumulated Amortization		Net		Weighted-Average Remaining Amortization Period (in years)
2014
Member list	$	1,670	$	394	$	1,276	4.6
Content	140		66		74		1.6
Core technology	110		52		58		1.6
Data acquisition costs	3,488		2,358		1,130		1.2
Other intangible assets	300		83		217		2.2
Total amortizable intangible assets	$	5,708	$	2,953	$	2,755



	Cost		Accumulated Amortization		Net		Weighted-Average Remaining Amortization Period (in years)
2013
Member list	$	1,670	$	122	$	1,548	5.6
Content	140		12		128		2.6
Core technology	110		16		94		2.6
Data acquisition costs	3,296		1,566		1,730		1.2
Total amortizable intangible assets	$	5,216	$	1,716	$	3,500