I hear you can get your BL_ID deactivated if you share an account.
though, he isn't sharing an account.the BLID he uses in-game was banned of the forums, so he bought a new BLID. he wants to give that BLID (the one he's using for the forums now) to his brother.there's nothing wrong with that, btw.
Well make sure that his posts are appropriate.
do you even read the OP's
Doubtful.