Really entertaining reading
I stumbled across BustedUpCowgirl.Com, which is a site featuring the efforts of some people to fight back and really mess with Internet scammers. This particular woman is in the horse business, but these Nigerian scams are frequently used for online motorcycle or automobile advertisements.
Click on the link in the Blogroll list on the right hand side of the page.
Have a look, I think you will get a kick out of it!