We all really hate spam, and sometimes to the point of wanting to give up on email altogether, and just tell your friends to use a phone, or paper. Christopher Null at Yahoo Tech posts about a site called “10 Minute Mail”. Pretty handy. There are other options too, such as using the + sign, and appending a unique identifier, for example email@example.com. Not sure how many services support it, but I know that GMail does, as does any server running postfix, and sendmail if I remember correctly. You can easily use the + as a separator to filter mail.