If somebody called bm_toon7@ hotmail.com adds you to their account/invites you –

DON'T accept it because it's a hacker. Tell everyone on your list because if somebody on yours adds them, you get them on your list and he'll figure out your ID computer

address.
So copy and paste this message to everyone even if you don't like them and fast. because if he hacks their mail, he hacks yours!

Regards