Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2013

Weighted Average Assumptions for Options Granted

The following table presents the weighted-average assumptions for options granted during the periods presented:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
	(unaudited)
Expected term (in years)		6.0			6.3			6.1			6.3
Risk-free interest rate		1.65	%		0.89	%		1.26	%		1.27	%
Dividend yield		None			None			None			None
Volatility rate		44	%		41	%		44	%		42	%

Effects of Stock Based Compensation on Condensed Consolidated Statement of Operations

The following table presents the effects of stock-based compensation on the Company’s condensed consolidated statement of operations during the periods presented (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
	(unaudited)
Stock-based compensation expense:
Marketing	$	110	$	81	$	308	$	198
Technology and development		339		200		861		518
Customer service and operations		120		74		304		183
General and administrative		531		349		1,364		813
	$	1,100	$	704	$	2,837	$	1,712

Stock Option Activity and Related Information

Stock option activity and related information during the period indicated was as follows (unaudited):

	Options Outstanding			Weighted- Average Exercise Price		Options Exercisable		Exercisable Weighted- Average Exercise Price
Outstanding at December 31, 2012		6,730,520		$	5.10		3,352,116	$	2.20
Granted		570,720			22.31
Exercised		(998,753	)		3.37
Forfeited		(140,518	)		9.80
Outstanding at September 30, 2013		6,161,969		$	6.89		3,236,378	$	3.30