I recieved a similar email from some lawyer joker just this morning. I politely told them to we didn't own the site and had no control over the content. I then told them to hire someone with an understanding of the internet so as not to look like an ass in the future.
they thanked me for my prompt reply.
hehe, the threatening to go public with you is SOOOOOOOO funny.
why can't I get someone that stupid anymore?