2008
Defensio · Outsmarting Evil Spam
by Xavier Lacot & 3 othersAn API aimed at qualifying blog comment spam. Accpeted input/outputs are XML and YAML.
2006
2005
Stop Comment Spam and Trackback Spam « Akismet
by gweb & 13 othersKills Blog Comment Spam and Trackback Spam
1
(4 marks)