Other anti-spam services
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Other Anti-Spam Services
A list of anti-spam services (other than SLV and Mollom) that could possibly be added to Geeklog as modules for the Spam-X Plugin:
Akismet
Akismet is associated with the WordPress blog platform. The service initially required a wordpress.com account, which made it not suitable for use in Geeklog (asking our users to sign up with a competitor's website would have looked odd). This requirement has since been dropped: You still need to sign up but can do so now from the Akismet homepage. The service is free (payments suggested, though. Commercial options are also available).
There is already an older version of an Akismet module for Spam-X. It will probably need a review to check for API changes.
Defensio
Defensio is a service owned by security firm Websense. The service requires signup and is free "for all personal bloggers" (commercial options available).
TypePad AntiSpam
TypePad AntiSpam is, as the name implies, associated with the TypePad CMS. It is currently (still) in beta. The service requires signup and is free ("and will always be free" -- quote from the website).
Stop Forum Spam
Stop Forum Spam is a private (one-man?) project. It doesn not require signup and is free.
Their API has an option to check for a poster's user name, which at first glance doesn't seem like a reliable criterion to detect spam (the API has other options as well). Michael Hampton (author of Bad Behavior) also expressed some doubts about the service.