I'm working on a Yahoo Answers clone that forces users to enter Oxford style debates revolving around Yes/No questions, and everything is run by a smart contract and stored on IPFS so it's censorship-proof.
Augur or Kleros could be used for the final voting process on a "debate". It'll be interesting, and I wonder how best to promote "the wisdom of the crowd".
I'm calling it Yokel Answers right now.