Well, I wouldn't call the pirate that big of an idiot, at least by current Internet standards. That's usually how some pirated material gets propagated, as it's usually the fans who pirate the work (and before the proliferation of ePubs and Mobis, scan the work, OCR it, etc.). Their target downloaders after all are fans of the work.
One of the stranger circumstances I've seen is SF author Nancy Kress conversing with her pirater:
http://nancykress.blogspot.com/2010/...th-pirate.html
http://nancykress.blogspot.com/2009/...th-pirate.html
http://nancykress.blogspot.com/2011/...of-pirate.html
Goodkind's method of curbing this piracy is attack on the pirate's privacy. (Thankfully Goodkind withheld the pirater's address and contact no., as this can be used to harass--or worse--the pirate.)
Do two wrongs make a right?
I'm actually more surprised that this tactic by Goodkind worked.