Scamming the Nigerian scammers once again.
http://www.ladsoflagos.com/
Dedicated to junk mail activities including how to send and how to prevent them.
http://www.junkmailunited.faithweb.com/
Procmail-based junk email filter system for filtering junk from Cyber Promotions, Nancynet, Quantcom, and more.
http://junkfilter.zer0.org/
Free service that checks incoming email for UCE and filters it out before it reaches your mailbox.
http://www.despammed.com/
Highlights the dramatic increase in unsolicited email spam transmitted by mailers and network marketers using unconfirmed address lists.
http://www.cluelessmailers.org/
Collection includes, letters, jokes, surveys, and petitions.
http://www.chainletters.net/
Anti-spam system uses proof of work and digital signature techniques to apply the concept of postal metering to an electronic, peer-to-peer model of postage.
http://www.camram.org/
Research, advice, and links to help stop the spread of email hoaxes, misinformation, and chain letters.
http://www.breakthechain.org/
Offers information about spam and how to stop it.
http://www.antispamstation.com/
News, information, and community to better connect the users of Open Source sendmail, which handles an estimated 75 percent of the Internet's email traffic.
http://www.sendmail.net/