4chan is a type of forum-based site known as an imageboard. On 4chan, there is no registration or really rules as a whole. /b/ is the random image board of 4chan, and is a bit like GD on Gaia (the key difference being that /b/ is full of intellectuals acting stupid whereas GD is full of preteen idiots acting smart, with a few key exceptions in both cases).
It would probably shock most members of this guild to go there, but I rather enjoy it in small doses, much the same way that I've come to enjoy small (minuscule. Microscopic, even) doses of the GD.