InstructablesExcellent suggestions on a DIY spam filtering solution on Instructables: “I have been using a method of spam filtering for a number of years that works well in sorting personal communication from channels that may induce spam. I generally issue one email address to personal contacts and a second is used when dealing with online forum, e-commerce etc where I expect that address will fall in to the hands of spammers. I have setup two gmail accounts and the ‘spam’ account forwards all mail to the ‘personal’ account which labels those received mails with a filter accordingly. By pushing spam filtering out to the edge of the mail client, the address, you take away reliance on spam filtering technologies which can be duped.” Link.