Gateway Messenger Theory

Very similar to "gateway drug theory" which is the theory that the use of less harmful drugs may lead to a future risk of using more dangerous hard drugs except the addict moves from more common chat systems like whatsApp, Skype etc back to more older and dangerous ones like BBM Chat.

Guy1: Omg omg omg! BBM is for Android now!
Guy2: So?
Guy1: I need to get it a hit of that BBM again!
Guy2: Ok then..... that;s Gateway Messenger Theory you suffer from.