50 Best Websites 2010

Tumblr is having a breakout year. The trendy blogging platform — somewhere between the short-form bursts of Twitter and long-form blogging — has benefited from some high-profile media brands getting on board following a cool interactive Tumblr powered by Newsweek. But the site works just fine for the casual user too. With a variety of free themes available, and with tools to make sharing videos and photos a cinch, Tumblr can make even the most mundane updates look visually stunning. See Tumblr's mobile app.

The classics: Facebook, Twitter, Dodgeball, Reddit, Google Talk