I have considered skipping the regular fingerprinting, geolocation, captcha, hashcash, email verification, payment required, etc... mitigations and instead requ

I have considered skipping the regular fingerprinting, geolocation, captcha, hashcash, email verification, payment required, etc... mitigations and instead requiring people to drop into a public chat room (or pm/chat the support team) to have their account activated. The number of languages supported would be small to match whoever helped moderate this, but it would at least require speaking to someone. A PM thread or live chat would be an instant way to find out if someone can string two sentences together and might be worth allowing into the site. You could even have them create an account and solve a single captcha prior to getting access to the chat. It's not perfect by any stretch, but might be worth exploring having humans-verify-humans.