from what I've read from Wikipedia, /b/ is just a forum for real internet handicaps or over 60's throwing child research at each other and the admins and mods are just as forgeted up as everyone else who browse their forums utterly pathetic waste of time, most of their gimmicks like rick rolling and tub-girl eventually gets around the whole internet and then becomes a phenomenon, pisses most people off.
Go into a chat room and ask if anyone knows /b/ you'll get no replies, ask if they've seen/heard rick roll/tub girl you'll probably end up with nearly half the chat room pming you.
Just best to stay away from renowned /b/tards. and possibly 4chan all together.