What StumbleUpon does is this:
- Records you personal interests: Do you like philosophy? Art? Music? Flash Games? Liberal Politics? Conservative Politics? Cartoons? Relationship Help? Pretty much anything you can think of.. put a check by it if it interests you!
- Start Stumbling: Click on the stumble button and you will be taken to a website that corresponds to one of the interests you checked. (All of this is done by user submission)
- Submit: Did you Google something interesting and think that others might enjoy reading it? Click the "Like" button on your StumbleUpon toolbar and fill out a review along with tags. Now, anyone who Stumbles on pages with those tags will come across the page you reviewed! You are submitting to the Stumble process, and thousands of others do every day.
Shirky's social-semantic web ideas parallel StumbleUpons entire idea: Articles YOU choose are articles other people read, just tag them!
Along with Shirky, Morville would be happy to see StumbleUpon's ability to constantly retrieve information that the user finds engaging and interesting. I have Stumble'd upon many pages I've turned into ideas and papers for classes, and all with barely doing any searching.
StumbleUpon is a great way to find all sorts of information and multimedia that you are interested in, but it does have a down side. With the ability to click ONE button and have an unlimited number of websites that you really do find extremely interesting, you can lose a lot of time. And I mean a LOT. Don't believe me? Try it out yourself!