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Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Consolidated Statements of Operations |  |  |  |
Revenue | $ 83,730 | $ 59,558 | $ 236,745 | $ 167,484
Operating expenses: |  |  |  |
Cost of revenue | 33,260 | 22,936 | 94,419 | 64,525
Sales and marketing | 21,122 | 14,947 | 60,890 | 40,240
Product development | 9,870 | 5,685 | 26,922 | 15,300
General and administrative | 10,588 | 6,076 | 28,095 | 16,590
Total operating expenses | 74,840 | 49,644 | 210,326 | 136,655
Income from operations | 8,890 | 9,914 | 26,419 | 30,829
Other (expense) income, net | (50) | 20 | (48) | 29
Income before income taxes | 8,840 | 9,934 | 26,371 | 30,858
Provision for income taxes | 3,562 | 3,740 | 11,315 | 12,238
Net income | 5,278 | 6,194 | 15,056 | 18,620
Less: |  |  |  |
Undistributed earnings to participating stockholder | 9 | 18 | 31 | 59
Net income available to common stockholders | $ 5,269 | $ 6,176 | $ 15,025 | $ 18,561
Net income per basic share available to common stockholders: |  |  |  |
Undistributed (in dollars per share) | $ 0.15 | $ 0.18 | $ 0.43 | $ 0.55
Basic (in dollars per share) | $ 0.15 | $ 0.18 | $ 0.43 | $ 0.55
Net income per diluted share available to common stockholders: |  |  |  |
Undistributed (in dollars per share) | $ 0.15 | $ 0.18 | $ 0.42 | $ 0.55
Diluted (in dollars per share) | $ 0.15 | $ 0.18 | $ 0.42 | $ 0.55
Weighted average shares outstanding: |  |  |  |
Basic (in shares) | 35,304,066 | 33,692,876 | 35,161,644 | 33,522,289
Diluted (in shares) | 35,931,454 | 34,280,656 | 35,883,202 | 34,043,573

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