StumbleUpon is one of those revolutionary programs that after a few weeks of utilizing you will wonder how you ever survived without. It is to the web what the first search engine or javascript was. StumbleUpon is an extension for browsers - currently supporting the two major web browsers - Internet Explorer and Mozilla Firefox. Once you have installed this extension you define your interests and then click stumble. StumbleUpon pulls from a humongous database of user recommendations and takes you to a random site it thinks you will like based upon your preferences. You give the site a thumbs up or a thumbs down and it refines it's ability to find sites you like.

   Good sites work their way up to the top, bad sites disappear. Its a great way to find new sites that interest you or to find something to do when you are bored.