What is called disposable address is an address you use only a few times then throw away. The best example of this is “spamgourmet”:http://www.spamgourmet.com/.
With a username hushpuppy with spamgourmet, you can give out addresses in the form _suspicious.3.hushpuppy@spamgourmet_. The number 3 indicates *this address has a lifetime of 3*. The meaning? spamgourmet will forward the first 3 e-mail sent to this address to you, and after that any further e-mail to this address is just deleted by spamgourmet.
This is very useful, as many times you just need to recieve a few e-mail from a website. (most commonly for confirmation) After that you probably don’t want any “good offers” that the website or its friends will send to you. The number of e-mail can be set up to 20. And the service is completely free.
Giving e-mail address while buying something from internet is probably the second biggest source of SPAM you will get, apart from having your email exposed on webboards and newsgroups. Use disposable e-mail when you buy things, get no spam, simple?
Similar services include “jetable”:http://www.jetable.org/ (can set expiration date/time for disposable address), “EndJunk”:http://endjunk.com/, “mailshell”:http://www.mailshell.com/ (not free), “Yahoo! Mail Plus”:http://mailplus.yahoo.com/, “MailNull”:http://mailnull.com/, “Mailinator”:http://www.mailinator.com/.
I take my e-mail seriously!