StumbleUpon is the tool for Internet Abuser A.D.D. folks, like myself. If there's something out there to share to hundreds, Stumble it, people will see it - they'll enjoy it for about 30 seconds, then Stumble on to the next site. There are moments when you can Stumble across things that you bookmark, maybe, or review yourself, and have it save to your Stumbled list... but it's gotta be something most awesome and sticks out from the 1000's of sites a Stumbler can see every hour.
At least, that's my take on it. Check out Socisophy.com & share your thoughts on our posts of what we find when Stumbling the web & reviewing what we find.