lol, I've had over 50 of those folks putting www at the begining of their email..
not entirely odd, though. "www" is nothing but a subdomain. Just like how forums in forums.site.com is a subdomain, so is www a subdomain in any site where the url is www.site.com. And as I'm sure everyone here knows, subdomains can be used in email addresses too. Never seen a someone@foo.bar.mit.edu address? or something similar. I'm sure you have. That could just as easily be @www.something.com - the only difference is that generally, nobody with clue makes their subdomain a working part of the email domain, and hence, using that will bounce (as for the email protocol it shows up as inexistant).