Shoutbox

this is better than the hotmail one because its more easy to see, the hotmail one isnt all that visible at first glance tbh.
you know paperless, sending one back isnt a good idea. it will just bounce of their server making the whole thing pointless and so increases spam email traffic or they might actually have a script that scans all the replies and then finds all the email address in it, that way they are sure they there is someone at the other end reading them, so you will probably get more.