>>4383 (OP)
Testing out an antispam method, and I've evidently made it too strict.
>Why did I have to pass a test
Because almost all of the CP spam comes from browsers with their language options set to Russian, so I made that a test criteria. Turns out your browser says it accepts over 20 languages, including Russian! So I need to make it check for the primary language.
(Those who failed that test still have a way through, it just does more thorough checking for known-bad browsers.)