If you’ve ever tried to join the "Steam Underground" forum at

If you want your community to survive for two decades, do not fix the register button. Let it break. The right users will find the crack in the wall.

You can actually browse many parts of CS.RIN.RU without an account. If you just need a specific file or info, check if it's accessible to guests before stressing over the login. Is CS.RIN.RU Free?