I have a suggestion here. I noticed all applications (including mine) put in their e-mail address in its entirety. How about saying to put user [at] email.com and such instead of user @ email.com? (without the space on user@)
well it just depends on the members if they want to be safe or not.. no need for theory to tell them to put an [at] in replacement for @... take a look at mine: http://www.x10hosting.com/showthread.php?t=82