I run a small social networking site that provides twitter-like capabilities (It's a gnu-social based service). I am concerned that many of my (legally adult) users have used the site to arrange real world meetings with one another. By tacitly allowing users to do this on site, am I exposing myself to liability should one of these meetings go sour?
Case in point: I have received some very tenuous evidence suggesting that in the past, one of my users has been involved in criminal behaviour. (A copied and pasted IM log). Am I obligated to kick this person from my community because they might hunt down one of my users and eat their face? They seem well adjusted and friendly enough now, but that could be exactly what they want me to think.
I, the owner, am in Europe, and the server is in Canada, as far as legal jurisdiction applies.