OK, I am very new to this and not sure I understand how it works. What is the difference between these two terms..BBM and PIN?
Also, I have a friend on my Facebook, he goes to my school. He asks all day long for people to message him and he has his PIN there. If I do send him a message, will he know who I am? He will get my PIN, or will he only see the username I have set up? Not that I don't want him to know it's me, but at first, I don't, until I've talked to him a while and see if he's worth it.