For LinkedIn, the most important thing is definitely their very real revenue coming from their huge CPM rates. >$15CPM, I've heard. Slide's ridiculous valuat

For LinkedIn, the most important thing is definitely their very real revenue coming from their huge CPM rates. >$15CPM, I've heard. Slide's ridiculous valuation comes from their reach and the idea that eventually someone has to figure out how to monetize social networking eyeballs. When (if) that happens, Slide will be in a great position. Meebo is kind of neat and isn't trying very hard with revenue.