The person who starts a PM should have the rights not just to invite but also to kick out whatever user(s) they want.
This I could agree with... but with editing others PMs???? No way! (Tho technically an Admin could by logging in as the person, but I'd find that an abuse of power). Editing a person's public post is sometimes warranted to edit out personal attacks or language not caught by the censor, but I do NOT believe that posts should be edited for too many other reasons. If someone typed something, they probably meant it.
IMHO.
