On the way into work this morning I heard about Papernapkin.net . It's a response service for women who want to reject the men who pester them in bars or on the street. From their home page

So here's the scenario: You're out at a bar, riding transit, or even just walking down the street, and some bozo who desperately wants into your pants starts up a conversation with you. Rather than make a scene or make them upset, you're polite and at least nod at the proper times. Then, of course, they ask you for your number. Except this is 2004, so maybe they ask for your email address instead. That's where Paper Napkin comes in. Give them anyname@papernapkin.net (or paamail.com, to be less suspicious), tell them it's your address, and when they write you, they'll automatically get a response telling them how badly they've been rejected.

I took a look at the sample rejection letter and it's quite clever. They even provide a feed back service to improve the letters. I wonder how popular they will be now that the word is out. So far they have 2 domains available. Check it out.