I like the look of Sprouter. I read about it here. While it's hard to avoid comparisons to Twitter because of the styling, Sprouter appears to be far more useful for entrepreneurs and small businesses than Twitter would ever be. You wouldn't have to sift through a sea of mundane Tweets about lunch to find anything of value. The focus is upon startups and helping entrepreneurs. You can ask questions of the experts, find resources and build connections at Sprouter. I think it's very promising. Chances are you'll get a speedy response from someone that knows what they're talking about. There's been plenty of press coverage too by major hitters: http://sprouter.com/press See what you think and let us know please.