I actually sat down and spent a few hours 'curating' my Facebook recently: marking people as acquaintances, 'hiding' posts on my timeline that I don't want to see, setting up lists of different types of friends ...

Arguably this should happen automatically -- but, I'm pretty surprised at the large positive effect this has had: Facebook is revealed as an amazing communication tool -- it's not perfect, but considering it's (mostly) free, certainly not something to complain about.