Attached Link: http://www.mailinator.com

When I dont want to give out my e-mail address I use Mailinator. It is an email service that don't require any sign-up or anything. Basically, you go to the site that requires registration and give them a mailinator address such as "somebody@mailinator.com". THEN you go to mailinator and check your mail by just typing in the username you used. The messages then gets deleted after a few hours. Pretty handy for these types of situations.