StumbleUpon is an
Internet community that allows its users to discover and rate Web pages, photos, and videos. It is a personalized
recommendation engine which uses peer and
social-networking principles.
Web pages are presented when the user clicks the "Stumble!" button on the
browser's toolbar. StumbleUpon chooses which Web page to display based on the user's ratings of previous pages, ratings by his/her friends, and by the ratings of users with similar interests. Users can rate or choose not to rate any Web page with a thumbs up or thumbs down, and clicking the Stumble button resembles "
channel-surfing" the Web. StumbleUpon also allows their users to indicate their interests from a list of nearly 500 topics to produce relevant content for the user.
[4] There is also one-click
blogging built in as well.
Toolbar versions exist for
Firefox,
Mozilla Application Suite,
Google Chrome and
Internet Explorer, but StumbleUpon also works with some independent Mozilla-based browsers. Third party toolbars have also been created for Safari
[5], and Opera
[6]