Could someone explain the "club" stuff?

[Roro]

I'm curious as I see it in everyone's sig. Someone want to tell me what is going on with it?;d

[Roro]

noone? thats kinda lame

[G Man .40]

Roro, You are issued a number from the moderators of different clubs thats all it is. Hope that helps.

[Roro]

ok so its a "Sign up:here's your number" thing. Ok I didnt know and I didnt see any explinations on it.

[G Man .40]

Ok gald I could help clear up any confusion.