Use a separate email address when you post messages to any public forum, such as newsgroups and mailing lists. Never use your personal email address for this purpose — or you’ll be flooded with spam.
Consider acquiring multiple email addresses for different purposes. This helps you to identify different sources and senders, and lets you filter more effectively. For instance, you may have one for personal use only by friends, family or colleagues that is never used to request information or to subscribe to newsletters, discussion lists, etc. Free mail services like Yahoo! Mail and GMail can be used for this purpose.
You can subscribe to services online that provide you with disposable addresses that can be deleted if they begin to attract spam messages. For information on what you need to know about disposable addresses, visit:
http://email.about.com/library/weekly/aa072002a.htm
Remove your email address from your website. If you list or link to your email address, you can expect to be spammed. Address-harvesting robots will spider your site and extract them. So remove them wherever possible and use web-based forms instead.
NEVER buy anything from a company that spams. Don’t visit their sites or ask for more information. If you respond to their spams, you’re encouraging them to continue spamming — they only need a tiny fraction of responses to be profitable. There’s another reason not to buy anything from a company that spams: over 95% of spam offers are scams! In fact, not responding to spam is the single most effective way to not get scammed on the Internet.
Filter your email. Using filters is key to managing your email effectively. It may take a short time to figure out how to do this, but it’s definitely worthwhile.
Consider subscribing to a spam prevention service. We’re not enthusiastic about these services, but many people find them invaluable. They range from the good to the bad to the downright ugly, and from free to fee-based.
While these 7 tips may not actually stop spam, they will certainly help you drastically reduce the amount of spam you get.
For more info on stopping spam, visit Scambusters.