I believe that that is abuse of an admins power is totally not acceptable. Should something like that happen to me and they change my avatar, you will not see me visiting or contributing towards such a forum in a very long time.

Your posts and opinions are your own on a forum and shouldn't be edited in any way unless they are against the boards rules. Same thing applies to the avatar. They are changing your avatar to make an fool of you.

I have a very limited range of forums I visit because of behavior of mods and certain users. Not going to mention any names, but particularly forums run by people of the younger age group who have a bit of authority on forums. Sorry for generalizing a bit here as I know some very mature 'kids', but majority who have been given power tend to abuse their power.

So all in all I would steer clear of any forum on which I think something like that will happen!