Honestly dude, don't take advice from anyone on BHW. Until you're in the position of a lawsuit, you'll never know. People last year were laughing at the idea that Facebook would send out cease-and-desist letters or file any lawsuits. A few months later, a bunch of C&Ds later, and some awarded judgment from lawsuit cases - those folks are now all saying stuff in hindsight.
From what I hear (friends i know at FB), Facebook may start to litigate any case they can. It isn't for the money, it is for the principle.