StumbleUpon seems to be a very popular site. While I have never personally invested any time looking at the site, I read about it nearly everywhere.

Most of the time when I hear about StumbleUpon, it is in reference to the Firefox plugin, however by sheer happenstance, I stumbled upon (ha) a StumbleUpon plugin for Internet Explorer.

So if you like StumbleUpon and use Internet Explorer as your preferred browser, this plugin is for you.