Killing Comment Spam

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While some other blog software has had comment moderation before, since I use a completely hand-written CMS, I needed to implement it myself. I've been having quite the problem with comment spam recently (as any of you with RSS readers has seen, I'm sure), but hopefully my solution will fix it. Of course, I can't discuss it or it makes it very easy for the spammers to work around it. We'll just have to wait and see, I guess.

...ye olde security by obscurity?

*shudder*

The strength of the system isn't measured in its rigidity (i.e. its ability to thwart the initial onslaught) but rather its ability to absorb damage (i.e. its resilliance after the attack.)

It blocked your comment ;-)
Unfortunately, I don't have infinite time to create the ultimate solution to this problem; and I'm not all about blacklists or any other bayesian filtering for my website comments. Unless there's a simple, elegant solution out there that I haven't read about, this will do for now.

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