Garth of Deadly Bloody Serious points out a cool technique for dealing with spam.
It’s easy for me to manufacture email addresses on demand for registration with web sites, subscribing to mailing lists and so on because pretty much anything sent to my domain ends up in my inbox.
Even if you don’t have a domain of your own, though, you can get much the same effect:
username+nameofpotentialspammer@yourdomain.org
For some reason, SMTP servers stop analyzing the address at the plus sign, so as long as what’s before the plus is your usual email address, the mail will get through to you. Your mail filtering rules, on the other hand, will probably be able to match on the full address including what’s after the plus. Easy, huh?