Comment spam has been driving me nuts. I implemented a blacklist based fliter a while back which stopped a bunch of it, but ever week 100’s of bogus comments got through because the blacklist was not updated fast enough.

So as of last night I have implmented a CATCHPA solution on the comment posting form. CATCHPA stands for “completely automated public Turing test to tell computers and humans apart”. The term “Hip” is also used “Human Interaction Proof”.


  1. sorry charlie (intended), that CAPTCHA is easily beaten

    BTW thanks for contributing MCE Controller. works great

  2. http:// says:

    Now using the Clearscreen 1.3 HIP (1.4 doesn’t work). Thanks for the head’s up.

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