You guys made it sound cool, so I just tried it for the first time. Wasn't impressed AT ALL. Its just like a marketing tool, you select all these categories at the beginning (rather basic and lame ones at that; sports, music, art, animals, health, etc) then you push a "stumble upon" button and it takes you to a page you MIGHT like. ONE BY ONE.... I thought there'd be a google chrome type page with thumbnails of cool stuff I might like with a nice interface, instead just crappy random webpages, lots of network errors, no image save and no bookmarks. wtf.
Perhaps I just didn't give it enough of a chance, I didn't check out the whole friends thing or whatever. I just don't like waiting for a page to load up, then not liking it, and waiting for another random one. Zzzzz.