>If you get a lot of spam, think it's a good idea to have two email addresses -
>one for spam, and one for normal email. It's especially useful, if you post
>articles to Usenet, from where spammers get our emails :-(
>Then you can set up procmail or filter at your Unix account (if only you use
>it :-), to delete all mail for spam account, that doesn't contain exact "To:",
>"Cc:","In-Reply-To:" or "References:" header.
Or, do it with submailboxes.
There's a very well written FAQ:
<a href="http://www.netusa.net/~eli/faqs/addressing.html">Email Addressing FAQ (How to add and use submailboxes to your email address)</a>