https://bugzilla.wikimedia.org/show_bug.cgi?id=62960

--- Comment #19 from Nikola Smolenski <smole...@eunet.rs> ---
(In reply to Emufarmers from comment #16)
> (In reply to Nikola Smolenski from comment #15)
> > From what I can see, ReCaptcha is not less user friendly than any other 
> > textual > captcha,
> 
> http://emufarmers.com/recaptcha1.jpg
> http://emufarmers.com/recaptcha2.jpg
> http://emufarmers.com/recaptcha3.jpg

Your examples show highly distorted text, and utmost majority of recaptchas are
not so distorted. Even so, if these are more difficult to solve than other
captchas, they are equally user-friendly. They only require from users to enter
the text that they see.

(In reply to Nemo from comment #17)
> (In reply to Nikola Smolenski from comment #15)
> > Could anyone provide any evidence
> 
> http://cdn.ly.tl/publications/text-based-captcha-strengths-and-weaknesses.pdf

That link states that they had 10-24% success rate on CNN's and Digg's captchas
and that "Only Google and Recaptcha resisted to our attack attempts"; that is,
against Recaptcha they had success rate of 0%.

> (In reply to Emufarmers from comment #16)
> > Google is fully aware that they're impossible, which is why if they don't
> > think you're a bot they now just give you a house number to digitize 
> > instead.
> 
> And of course they don't use it for their own products.

That is not true, I just tried to create a new e-mail account at GMail, and
they use Recaptcha.

(In reply to Amgine from comment #18)
> (In reply to Nikola Smolenski from comment #15)
> > Could anyone provide any evidence for the claims that:
> > * ReCaptcha donates cpu cycles from users to Google and exposes users to
> > Google's data collection processes without informed consent?
> 
> https://www.google.com/recaptcha/whyrecaptcha
> 
> "It's Useful. Why waste the effort of your users? reCAPTCHA helps to
> _digitize books_." [link to http://www.google.com/recaptcha/learnmore]

Yes, and that page is exactly the way that the users are informed about the way
their CPU cycles are donated, so that they may form their consent.

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