A few Twitter users awoke this morning to find their activity streams filled with a new ‘Trending’ TV box. The social network is testing out new ways of monetizing its service, and to drive higher usage. The trending box displays current popular TV shows as cards in a user’s Twitter timeline, and links to more information about the show, people in it, as well as promotions and other offers. So far, the elusive feature seems to only appear through the iOS app, rather than through the desktop, implying that Twitter is testing it as an augmented second screen activity. Expect to see more on this soon as it’s a developing story.