Not sure how widely the info is being distributed right now, but Wikia is apparently trying out a new "Alliance" system. Details are a bit vague at present. Now, if we sign the Wiki up for one, it seems like a no-brainer which one. But, as the page says, this should be a community thing. So, I'm starting an impromptu community discussion here. If there is enough positive feedback, we can put it up in the policy forum for a vote.
Like I said, the initial info they're giving is a tad vague, but let's hear what you folks think!