I was listening to an interview with how the Onion works, and it's actually pretty interesting. A lot of the time they pay contributers to just submit headlines; like a certain amount a month. The pick however many to run; some just as headlines, some as full stories. They then get another contributer to write the story for the selected ones. I have no idea why they split it up like that, or if they do it like that all the time, but I guess it works.