Oh it's certainly an
SEO trick, and unlikely the original poster will come back. At least this time he / she has used a different email address to their website - now that's what makes me laugh. In this case, I'd assume that the website in question has paid for
SEO and the less than scrupulous chap has used this method.
I'll leave it though. The benefit they get from the back link will be outweighed by this negative
PR 
.