StumbleUpon is a browser toolbar that recommends Web sites based on viewing patterns of other people with similar user profiles. And because StumbleUpon’s social browsing application has been such a big hit the company is launching a separate site for video referral called StumbleVideo.

The vice president of marketing at StumbleUpon, David Feller, said that a lot of growth in stumbling videos has been seen lately, therefore they are able to bring highly relevant, high quality content, based on the stumblers preferences. With StumbleVideo, you never leave the page. The content is brought directly to you. It’s a lot like channel searching but everything is customized based on your interests and preferences.

On StumbleVideo only videos from the top three sites, YouTube, Google Video, and Myspace, will be showed. In the future any other site with embeddable video can and will be served.

Before StumbleVideo learns a users preferences, it starts them out with 20 video categories. Within the category, it starts playing videos, which users then give either a thumbs up or a thumbs down. The program will then play the subsequent videos accordingly. Users can also click on a triangle in the bottom right portion of the screen to open a side screen showing which users watched and liked the same video.

written by Robert M.