If you send me spam, I automatically turn around and forward it to the following addresses:

• spam@uce.gov
• spam@barracudanetworks.com
• reportspam@ipswitch.com
• submit@respam.com
• spam@sendusspam.com
• spam@mailpolice.com
• spam@mail-filters.com
• spam@postini.com
• spam@support.trendmicro.com
• junk@brightmail.com
• ...and my secret spamcop.net address

When it also involves phishing, I add the following:

• phishing-report@us-cert.gov
• scams@fraudwatchinternational.com
• reportphishing@antiphishing.org
• fraud@phishfraud.com
• Report@reportphish.org

Then two of the most popular spams I get are stock tips and cialis/viagra junk, so I forward them to enforcement@sec.gov and webcomplaints@ora.fda.gov respectively. Then 419 Nigerian scams to get 12 million dollars of free money for just "borrowing" my checking account, get forwarded to 419.fcd@usss.treas.gov, even though I don't think much can be done about them. If I'm in a particularly bad mood, I forward OEM/cheap software spam to piracy@microsoft.com, spamwatch@symantec.com, and/or piracy@adobe.com, since Symantec, Adobe, and Microsoft are almost always part of their catalog.