Facebook today announced Trending, a new section in the top right corner of the News Feed that highlights TV shows, events, and articles that are being talked about by its users. Facebook says that these articles will come from public Facebook Pages and public figures, but also from Pages you follow and from posts by friends. You cant yet buy sponsored trends like you can on Twitter, but Facebook wont deny that theyre coming. Facebook has experimented with trending stories and topics time and again — and in various places around the site.