It occurs to me that a technical thing that could possibly improve things a bit would be if we always had to push the preview button. Just possibly, seeing what we've just written up there in a more formal typeface might make us think again, sometimes, when we've written something we'll later wish we hadn't.

I know I spot typing errors and ambiguities I'd missed that way.

It wouldn't have a dramatic effect, and it wouldn't do a thing to stop the real nasties, but it might head off some of the angry responses that spiral on out of control.