It could be that this is just a separate world though. In my world, I wish to opt in and choose what I share. Perhaps in someone else's world, they wouldn't even consider not sharing something. Following what my family on Facebook do certainly convinces me that at least some people think that way.

For me, on the other hand, Facebook has put a ton of friction into sharing. Although I am a normally candid person, I find myself overconsidering whether or not I really, really should post what I'm about to. In the end, I go with self-censorship.