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Added a CAPTCHA Test for Comment Spam

By Jacob Cohen | March 21, 2007

I’ve added a new test to prevent comment spam, using a CAPTCHA. This particular implementation is called Peter’s Custom Anti-Spam Image Plugin for WordPress

This was in response to the fact that Akismet doesn’t work effectively against comments that haven’t been previously flagged as spam. So if someone writes a script to see what they can get posted onto blogs, and no one’s flagged it as spam yet, Akismet will let it through.

This will give me two stages of spam comment protection. The first makes sure the poster is probably a human, and the second checks that their comment is not something previously identified as spam.

Topics: General |

5 Responses to “Added a CAPTCHA Test for Comment Spam”

  1. Jacob Cohen Says:
    March 21st, 2007 at 12:02 pm

    Just testing the CAPTCHA.

  2. [0x90] Says:
    March 26th, 2007 at 1:51 am

    it’s boring having to type the image contents on the textbox, but assuming nobody spend all the day commenting on the blog, that won’t piss off anyone

  3. Jacob Cohen Says:
    March 26th, 2007 at 10:43 am

    I chose the particular CAPTCHA implementation that I did specifically so that I could control which words were used. I always did find it a bit tedious to enter things like “7Xt4c” where you’re never sure whether the C should be capitalized or if the X is really a distorted t, etc.

    Hopefully, the words chosen are simple enough that even people who don’t speak English natively will be able to recognize them.

  4. yonkeltron » Start Eating the Paste Says:
    May 2nd, 2008 at 10:29 am

    […] make them ripe for abuse by spammers and that has led to numerous discussions of the problem and use of CAPTCHAs to try and combat the issue. I had no idea this was even an issue though it makes a lot […]

  5. Jacob Cohen Says:
    May 3rd, 2008 at 10:55 am

    The pastebin spam on my pastebin amuses me, because it all expires after 24 hours and is not indexed by search engines. It’s like putting graffiti on the inside walls of a building that’s slated for demolition.

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