Interesting experiment, UB Ed. A similar one was conducted over a period of several months during the last year. The experiment generated four threads plus one thread about people who didn't participate in the experimental threads.
The experimental threads accumulated a total of 548 posts. The spin-off thread accumulated 61 posts. Dozens of limericks, poems, puns and other kinds of humor were posted to all of the threads, including the spin-off thread.
As a result of these threads, a minor subculture grew up within the Mudcat community that culminated in my taking a month and a half long trip to Canada and being crowned Ms. McGill 2001.