Looking for a date? A site says check the data - NYTimes.com

Looking for love on an online dating service? If you’re a man, don’t smile in your profile picture, and don’t look into the camera. If you’re a woman, skip photos that focus on your physical assets and pick one that shows you vacationing in Brazil or strumming a guitar.

Those are some of the insights that OkCupid, a free dating site based in New York, has gleaned by using statistical tools to analyze how the mating game plays out on its site...