I had a debate with Firebench on the Fallible Ideas Learning Basecamp. You can read an archive at:
curi & Firebench Debate (part 2)
We agreed to debate to a conclusion (either mutual agreement or an impasse chain of length 5). We made some progress and he was excited to learn a lot from great criticism, but then later he got upset, broke his word, and quit the discussion without a length 5 impasse chain. You could learn from analyzing his mistakes, my criticisms, etc. It's a good example discussion because his mistakes are pretty typical.