A good idea maybe is to assume that if anyone attacks us they've misunderstood something about what we've said, (or we've misunderstood what they were saying) and therefore there is no point in attacking back.

In face to face situations there can be exceptions to that, since physical damage can be involved. But in a virtual world that just doesn't apply, and it seems to me that counter-attacking is always a waste of space.

Anti-social behaviour. I'd say there are two sorts - treating other people's property as your own, and treating anything you don't own as valueless. Both are annoying - but the second is far more disquieting. A thief who takes things to use and "own" is a pain; someone who destroys things without even wanting to use them, that's scary.