Reddit - Reddit gives you the best of the internet in one place. Get a constantly updating feed of breaking news, fun stories, pics, memes, and videos just for you.
Lumi News - Personalized news, from the founders of Last.fm
Contextly - Contextly provides content recommendation system for publishers.
fastBMK.com - Fast, lightweight and reliable bookmarking service.
Digg - Digg delivers the most interesting and talked-about stories on the Web right now.
Flipboard - Your Personal Magazine. Find, follow and flip stories that change your world.