Why do I need to write something here? Why can't I just put the question in the title and leave this blank?
From what I can tell, they were merged with General Discussions.
Why? I have no clue, so hopefully someone (mods) can answer that one.
They went the way of the dodo.
They were actually combined into general. We found that they had the same topics anyway, but divided the community further. We combined them into one to get more eyes on each post and to unify people a little more.
We also cleaned up a bunch of other stuff while we were at it. I'll have a bit more info soon.
It is a nice change, survivor players where posting their propaganda at the killer forums anyway so it may confuse killer players and make them think killers shoud think or play like that: "nerf NOED", "Give the hatch to the last player", "only use mori after hooking twice", "respect the 4%", etc. Now they can still write those things but as equals, not as killers in disguise.