Re: "Dropping FB is suddenly becoming trendy. They may just need the push to join the trend."
The only thing trending is celebrities talking about doing it, or even doing it in some cases. Doesn't matter.
Joe User is not going to frop FB because there is nothing to replace it. MySpace is gone, Yahoo! is dead, there is nothing even in sight of challenging FB on functionality, forget replacing it. Even Google dropped its foray into the arena, despite hipster support that didn't really last all that long.
So no, leaving FB is not going to trend because the mindless idiots have nowhere else to post all the pics of their kids/family/spouse/latest purchase and pretend to be intellectual while posting duckface pics.