By midmorning, shares had added 2.8% to $13.18.
The online reviews site said quarterly sales jumped 40% year over year to $72.7 million, boosted by a 35% increase in total paid memberships to 2.6 million.
Must Read: Warren Buffett's 10 Favorite Growth StocksSELL NOW: If you own any of the 900 stocks that TheStreet Quant Ratings has identified as a 'Sell'...you could potentially lose EVERYTHING in the next 6-12 months. Learn more. That momentum is expected to continue. For its second quarter, management guided for revenue between $79.5 million and $80.5 million, exceeding Thomson Reuters' average estimates of $79.1 million. On its bottom-line, Angie's List more than halved its net loss to $3.8 million. Per-share net losses were 6 cents from 14 cents a year earlier. STOCKS TO BUY: TheStreet's Stocks Under $10 has identified a handful of stocks that can potentially TRIPLE in the next 12-months. Learn more.