[miroljub]

Why not entering a fake email and move on? It's not like many of them do email validation anyways. Something like [e-mail] will do.

At least let them having to handle junk data.

[tux3]

Or the site's own contact email addresses, if you want to be mischievous without potentially spamming an innocent bystander

[miroljub]

Good idea. That's what I'm going to use in the future.