This is strongly related to “Why should we exist?” and to “What are we trying to build?”. Also worth reading is the thread I wrote in reply to George Stocker on Twitter.
My take: we’re not trying to build Q&A any more. We’re incorporating the Q&A format into a larger product. I’d probably summarize it as “community-oriented, Q&A-based knowledge-building software”… which is a bit of a mouthful.
What I want it to do is to enable communities of shared interests to come together and manage for themselves how they pool, share, and teach their collective knowledge.