I have a Reddit account I used when browsing r/masskillers, r/columbine, etc.
I actually have a subreddit that's private and with no other users.
I know this might be a retarded proposal on my part. I just feel that the circumstances are dire enough as to potentially justify it. I guess that in the worst case scenario, we could move to Reddit. The subreddit would just have to maintain itself as a small niche, as I've seen with r/Columbine and r/masskillers that the post quality and knowledge of the users falls faster than a brick in mid-air when normalfags overwhelm it.
It's incredibly easy to sign up for Reddit, and one can do it behind a VPN and solely use one when on there, as I have.