Coinstar's ( CSTR) shares were surging 14% a day after the company reported strong results for the second quarter and offered upbeat guidance.Revenue for the most recent quarter rose to $130.3 million from $109.8 million, the company said. Coinstar, an operator of coin-counting machines found in supermarkets and convenience stores, earned $4.1 million, or 15 cents a share, in the second quarter. Before items, the profit was 18 cents. The estimate was 13 cents. A year ago, Coinstar earned $5.3 million and 21 cents a share. For the third quarter, Coinstar is looking for revenue of $140 million to $150 million and earnings, before items, of 22 cents to 29 cents a share. Analysts are expecting earnings of 20 cents and revenue of $143.8 million. Shares of Coinstar were climbing $3.16 to $25.10.