The Quora was interesting to quickly use actually, as opposed to the Yahoo and such issues with duplicate crap all over the place, answering exactly as you stated Michael.
As you type a subject in, its already searching and delivering it too you for adding onto vs. starting a repetitive topic, and if not found, gives you the option to create it. Tackles the duplicity issue that these Q&A sites have previously sucked bad for.
I think it would be a nice add-on to a fourm site.
User asks a question. Must be a short question (think tweet).
Other may answer the question. Everyone is allowed to vote on the best answer.
Question: Who was the greatest football player ever?
Best Answer: Chuck "Concrete Charlie" Bednarik. Bednarik was the first player drafted in the 1949 NFL Draft, by the Philadelphia Eagles, starring on both offense (as a center) and defense (as a linebacker). He was named All-Pro eight times, and was the last of the NFL's "Sixty-Minute Men," players who played both offense and defense on a regular basis. (72 votes)