One thing which mystifies me about this whole situation is that Facebook arguably benefits from Lamebook's presence. Lamebook isn't a substitute for Facebook, it's a complement to Facebook. Someone who enjoys Lamebook for its humor will probably try extra-hard to find entertaining scenarios among their own Facebook friends, meaning that Lamebook increases Facebook's usage. Why you'd want to shut down a company that gives you more traffic (and therefore revenue) for a relatively unimportant and legally dubious reason is beyond me.

Not to mention, of course, the fact that Facebook is already invoking the Streisand effect by going after Lamebook at all.