I’m all for CAPTCHA systems. I know it can pose some accessibility issues, but in general, I think it does help control comment spamming in blogs.
Anyway, I haven’t enabled CAPTCHAs in my WP-powered writing blog. But, I’m having second thoughts about it, as I know one spam-control system being used with WP now is Spam Karma. I’m not 100% sure about how it all works right now, but from what I see at this time, I’m not really that impressed with it for these reasons:
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