According to Social Times, an online source for all things social media, Tumblr has eclipsed Facebook as the number-one platform of choice, with 61 percent of 13- through 18-year-olds using it, compared to just 55 percent using Facebook. What gives? Is Facebook really for old people? Tumblr lets teens fine-tune their interests, and it's highly customizable. Users can post text, photos, quotes, links, music, and videos from their browsers, phones, desktops, or email accounts, making it accessible anytime, anywhere. More than 89 million blogs are currently covered by Tumblr, which means every topic imaginable is available, from road-kill recipes (yum!) to keeping tabs on members of the royalty. Go ahead, give Tumblr a shot—you'll even find postings from libraries. For more on Tumblr, see Tumblrarian 101: Tumblr for Libraries and Librarians and Our Favorite Tumblrs by LJ and SLJ’s Tumblrs-in-Chief.