Brian Klems (of Writer's Digest fame) brought the following thread to my attention from the WD.com forums: http://forum.writersdigest.com/forums/thread-view.asp?tid=19564&start=1

First post:
"I have this gift you see
to write very bad poetry
Try as I might
It's something I just can't fight
So I write stuff you wouldn't read to a tree"

-wondo

Starting up in July, this thread is still going strong (with more than 500 responses to date). While other random forms have entered into the chain, the thread seems to rely mostly on limericks. So if you want to play around with a group of other writers, here's your chance.

*****

Also, Amy Barlow Liberatore proposed on my Facebook page that we all try writing "bad haiku." (She mentioned that Iain Douglas Kemp was partially responsible for inspiring her.) So if you want to start writing bad haiku, feel free to post in the comments below.