That definitely is an upside. However, although the trolling an profanity may have been reduced, it's possible that people don't express controversial opinions

That definitely is an upside. However, although the trolling an profanity may have been reduced, it's possible that people don't express controversial opinions they might have, as they are now linked to their facebook network. -That's part of the reason I don't have a FB account, I don't really want to have conversations with an audience that includes my aunt, my friends, and my coworkers. That just doesn't interest me. For example, there are many opinions and ideas I could quickly share with my childhood friend, that I could only share with my aunt with the inclusion of considerable context, so that I wouldn't be misunderstood. As a result, my conversations would probably by shallow and trivial, so as not to waste time, but then be ultimately uninteresting. I used MySpace some time ago, but dropped it for similar reasons.