Discussion: Textbook wiki?

For sharing lesson plans, curricula, teaching theories, methodologies, in the most useful way, I'm considering using existing wikibooks or wikiversity. Leaning toward the former.

My hesitation is potentially losing quality/consistency/messaging control. But I don't think that's a big risk, because hive mind is good, and it's fine to be super active as an editor, and I can always leave.

So, wikibooks?

I had been assuming I'd use Confluence, but then I heard that it might get expensive in the next few years. Then I thought of the value of direct community input.