Interesting for a proof of concept project, but totally useless in the real world where one of the obstacles to get a successful social news site up and running

Interesting for a proof of concept project, but totally useless in the real world where one of the obstacles to get a successful social news site up and running is to get submissions. Besides I don't see a strong correlation between users ability to solve a puzzle and their ability to find and post interesting content. Which would result in a pretty random front page...