Like the fact the Facebook has a picture of your real face right there, incentivizing everyone to play nice

This is the "real names make people nicer online" claim, which is one of those ideas people keep putting forth and for which there is no evidence it works this way. I say there is no evidence because every time it comes up I ask for some (and particularly during the G+ nymwars) and don't get any, but if you have some I'd love to see it.

edit: and by the way, here's my "photo".