I must say I think this was a most successful challenge, especially as I ended up in the top three this time
I'm trying not to let it go to my head, though, (you better believe it!) as what these challenges really teach us is how differently we judge and appreciate stories. I am sure there is a thesis in literary sociology hidden in the statistics and comments of the various challenges.
As others have already pointed out, the greatest asset of the challenges is probably that they help build the feeling of a real community by focusing the discussion for a while. And, of course, they create a big opportunity for discovering new authors.