There is no way unfortunately. Even if you post an email address it will get taken off - unless you are really quick and note it down before they have chance to delete it.....
No, and I'd be careful of doing the above with your 'phone number anywhere!
Set up a 'Spam' email addy on yahoo or somewhere and you may get a brief window to post it if you use 'dot' instead of '.' etc.
Not that I'm advocating such behavior of course!