WordPress Plugin: wp-hashcash
Plugin by Matt Mullenweg which is an adaptation of the Spam Stopgap Extreme plugin by Elliott Back, this is mostly a cleanup. This has comment submitters compute a special code using javascript before their comment is submitted. Very effective at blocking spambots and not noticable for commenters. XHTML 1.1 compliant.
Also notice the new WordPress Plugin Repository.






BTW, it looks like you’re missing the “h” in “http” on the second link
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I sure did, thanks Alex for the heads up!