Surprise! Facebook Is the Biggest Online Time Waster, Says Nielsen

And women like it more than men

Nielsen, most famous for its traditional media ratings, has been trying to keep up with the social media boom, announcing last month that it was teaming up with Facebook to offer ratings services for online marketing campaigns. And today, the ratings go-to has released the results of a comprehensive new study offering a big-picture look at social media, reports The New York Times.