Phorm writes "While filtering for spam on email and other related mediums seems to be fairly productive, there is a growing issue with spam on forums, message-boards, blogs, and other such sites. In many cases, sites use blockage methods such as captchas or question-answer values to try and restrict input to human-only visitors. However, even with such safeguards — and especially with most forms of captcha being cracked fairly often these days — it seems that spammers are flattering an increasing nuisance in this regard. While preliminary for plugins or extensions to spamassassin etc I have had little luck finding whatever at all not tied into the email framework. Google searches for PHP-based spam filtering tends to come up with mostly mercenary and/or more email-related filters. Does anyone know of a good system for filtering spam in general messages? Preferably such a system would be FOSS, and object with a daemon constituent (accessible by port or socket) to offer quick response-times."
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