Advertising isn't great, but spam really sucks.
http://www.camram.org/
http://www.cypherspace.org/~adam/hashcash/
http://www.captcha.net/
baffletext
Jetable
http://jetable.org/
http://www.mailblocks.com/login.htm
http://www.martiansoftware.com/articles/spammerpain.html
Analysis of how spammers find you email
http://www.cdt.org/speech/spam/030319spamreport.shtml
Analysis of spam techniques
http://www.activestate.com/Products/PureMessage/Field_Guide_to_Spam/tricks.plex
Why filter bad emails rather than accept good ones?
Solution de m4x.org avec les _xxx et +yyy...
http://research.microsoft.com/research/sv/PennyBlack/demo/
http://research.microsoft.com/aboutmsr/labs/siliconvalley/pubs/memory-final-ndss.pdf
IP dans l'adresse
http://yro.slashdot.org/article.pl?sid=03/06/21/2130234&mode=thread&tid=111&tid=126
Spam profits well-known american companies
http://www.msnbc.com/news/940490.asp?0ql=c9p
ASP.NET webcontrol for anti-spam mailto: links
http://www.codeproject.com/useritems/NoSpamEmailHyperlink.asp