After wrestling with Spam Karma over at Big Sky Blog (and having would-be commenters frustrated by “SQL barf”), and never receiving an API key to activate Akismet, I went in search of another spam-busting tool and found this nifty one: Did You Pass Math? The plug-in requires only one file and then one-click activation; it then adds a very simple math question (such as 2 + 4) to the comment form. If you enter the correct answer, your comment is posted. If you don’t answer - or answer incorrectly - your comment doesn’t get posted. And it doesn’t require any captcha-specific files or fonts! So go ahead - leave a comment here, and let’s see if you passed math class!

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