Most of their traffic comes from Russia and according to Google trends with "cryptotalk" term it seems only Russia use this term and it's going to be trending in this country.
Yep, and that's not a good thing SEO wise for them. It literally means that people only mostly stumble upon their forum is people that already know their forum in the first place. They'd have to rely on word of mouth from people advertising their forum as having an integrated pay-per-post. Though I'm not sure if that's what they want their forum to be known for.