But I get what you're saying. /b/ really is the largest board. In a way it's meant to be the containment board, or the moat around the castle. It's where all the shit goes, so it doesn't pollute the rest of the site. And oh boy, is the internet full of shit.
4chan is divided into boards (like subreddits). For example, /pol/ is for politics.
/b/ is the "random" board (or "anything goes") and the biggest one on 4chan. Some pretty awful stuff happens on there (as well as some pretty cool stuff). Basically it's a grab-bag of Internet.
cough gamergate started on /v/ cough
But I get what you're saying. /b/ really is the largest board. In a way it's meant to be the containment board, or the moat around the castle. It's where all the shit goes, so it doesn't pollute the rest of the site. And oh boy, is the internet full of shit.