> Marketplace and Groups are actually pretty valuable and usefu

Craigslist created a new way to sell things and built up to what it is (was?) on being usable, having enough trust, and not fucking it up. Literally anyone could replicate that and add a shiny UI to rival it if they had a giant social network to support it.

Hyperbolic analogy: it's like pinning a medal to the guy who invented the roadside billboard and completely passing over the dude who actually invented the car.

In the long run the only innovating Facebook is going to do over Craigslist is monetization, and that just sucks for users.