We recently upgraded the image captcha solution on imoc to use ReCaptcha, instead of the built in phpBB driven one.
We did have a fairly serious problem with adult weblinks being posted on the board by automated phpBB bots, which was a minor annoyance compared to when they worked out how to post images of their wares.. (not to mention the waste of volunteer moderating time).
So, in the space of half an hour or so, I added ReCaptcha to the site. Result - no automated spam since we did it, really, really impressed.
Which is what makes it all the more depressing when you read things like Inside India’s CAPTCHA solving economy (via WebmasterWorld).
No CAPTCHA can survive a human that’s receiving financial incentives for solving it, and with an army of low-wagedIndia CAPTCHA breakers human CAPTCHA solvers officially in the business of “data processing” while earning a mere $2 for solving a thousand CAPTCHA’s,
Oh joy. Although thankfully, IMOC must be low enough to not warrant it.. yet..
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