"( There's no way of editing one's own posts if you've made a mistake.

THAT is by design. It has been discussed, but that would allow certain "bloody idiots" to say nasty stuff and edit it to claim they didn't.

Editing is available and done regularly by mods if needed.

:-( There's no way of watching particular threads and ignoring others.

That would defeat the purpose of what we do here....that 'feature' exists in certain pre-digested forums where everything is mostly 'live conversations'.