ICM BLOG
BILLC
7 OCT.,08
http://nettuts.com/misc/the-best-ways-to-fight-spam/
Some ways are suggested to prevent spaming to your website, like recording their IP for multiple consecutive submissions, using captcha or keywords blocking. Indeed, author suggests a spam fightering tool ‘Akismet’ (http://akismet.com/). If you want to apply this in your webs, you need to get the API first.