Are there any websites which pay you to contribute to a knowledge base?

I've read that Quora has a Partner Program which pays users to ASK questions.

Some of them seem to make a pretty good living out of it.
Is there a website out there which would pay users to ANSWER questions in a structured knowledge base format?

(like the ones you find in HELP sections of popular services, powered by HelpScout or FreshDesk).
Not on a generic Q&A format.