One topic has half of all the posts of the entire forum. Also when you have a user posting nearly 10% of all the messages on the board, common....
So this is where cypherdoc ended up
Bitalk.org -> Seems to be Russian only.
There's another Russian Bitcoin forum, https://forum.bits.media/, and it's way more active.
Russia has a big Bitcoin community, and other than Bitcointalk forum
I know of few other forums related to Bitcoin and Crypto.