Aha, Orkut is now using CAPTCHAs.
Their scheme:
If you scrap someone with a URL such as www.google.com, you might be an automated malicious entity and thus should prove that you are a human. The way to do that is by passing a very simple CAPTCHA.
If you get the CAPTCHA wrong, you are given another CAPTCHA to break.
They have been having problems with malicious links. I guess this is their way to solve that problem.
Great to see one more example of CAPTCHA !
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Thursday, October 19, 2006
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