Cunningham’s Law
“The best way to get the right answer on the Internet is not to ask a question, it’s to post the wrong answer.”
From Fritinancy. It's not really a word post, but the word "eponymous" is used.

Also, check out
Schott's Vocab from the NYT.
June 07, 2010, 21:26
KallehI missed this, arnie. I enjoyed some of the laws in that Schott's Law Competition:
Link.