Stumblin' and bumblin'

The final item in our '23 things' list was to sign up for StumbleUpon and share a website.  This was my first time using StumbleUpon.  I can see how it might be an interesting diversion, but in all honesty it probably wouldn't be something I would use much on a regular basis.  Maybe it's just because it is new and I'm not very comfortable or familiar with it yet.  I think it is pretty similar to ScoopIt, but I feel like the articles that I find on ScoopIt are more useful and relevant for professional development purposes.  The things I saw on StumbleUpon were interesting, but not as useful - I am guessing this is because at the time of registration I just chose the 'Books' interest, whereas my ScoopIt account has more search terms.