SAN FRANCISCO (MarketWatch) -- Yelp Inc. (NYSE:YELP) on Tuesday reported a third-quarter loss of $2.3 million, or 4 cents a share, on revenue of $61.2 million. During the same period a year ago, Yelp lost $2 million, or 3 cents a share, on sales of $36.3 million. Yelp's shares were down about 1% in
