StumbleUpon's got a fresh look and new features in its second round as a startup — the site's rolling out a new logo, a new color scheme and layout, an integrated search engine, and "channels" for high-profile partners. The channels are basically curated areas which show content recommendations from a variety of websites, brands, and people, including Tom Hanks, Jim Carrey, ESPN, Adult Swim, Harvard University, and more than 200 others. Channels and search have not changed the basic formula, though — for those who don't know, StumbleUpon's eponymous functionality allows users to bounce between unexpected web content within areas of their interest. 

StumbleUpon had an interesting ride last decade — it began as a web startup in 2001, was acquired by eBay in 2007, and then became a startup again after the product was bought back by its founders and other investors in 2009. The company claims that it receives 20 million users and over 1.2 billion "stumbles" per month, and this is the first major redesign it has undergone since it was created. Ten years might be a long time coming, but from what we've seen, it's a simple and pleasing new look that's a lot less cumbersome than content warehouses like Facebook and Digg.