Blogshares seems like a fun idea that has attracted quite a bit of attention. Unfortunately, it includes a ticker–a mere frill–that is coded in Javascript that causes all Mac browsers (at least, that I’ve tried) to lock up. If you use a Mac, the only way to visit the site is to disable Javascript first. This has been mentioned repeatedly on the discussion board there.
The brilliant solution? A “ticker on/ticker off” switch. Implemented in Javascript. The only way to turn off the ticker is to turn Javascript on. If you do that, the browser locks up, making it impossible to turn off the ticker.
I think Joseph Heller wrote a book about this type of situation.