They don't. From la poast > You’ll also notice that there’s probably a lot less content from Facebook than from Twitter. Facebook allows us to show you posts

They don't. From la poast > You’ll also notice that there’s probably a lot less content from Facebook than from Twitter. Facebook allows us to show you posts from public pages, but not from your friends’ individual pages. We’re exploring ways you might be able to feed your whole, unedited Facebook news feed through Gobo, but we’re not there yet.