Here to save the day when it comes to using disposable e-mail addresses in a single click is TrashMail.net and their Firefox extension.
With this extension, you can easily with right click access create free disposable email addresses and paste them directly in forms. This helps to protect you from spam mails and could be useful when subscribing to forums or newsletters.
Previously one of my 10 ways to fix e-mail in Firefox, I don’t think this great extension has gotten the praise that it does deserve.
Personally I grow sick and tired of having to pass on my personal e-mail address to anybody who asks for it. You can think of this disposable e-mail address as your safegaurd from those who would bore or spam you till you can’t take no more in your ol’ inbox.