Is that so? What about the webmaster who simply wants to combat bots using his page, is the extent of data gathering on Google's behalf just part of the deal? What if selling user data is against the webmaster's ethics? "Don't use it I guess" Sure, except that no one in the exchange was told the extent to which this data is used, or what for. Users of Google's Captcha aren't told about this exchange. I disagree entirely that it's a matter of voluntarily opting in and out of Google's domain. Their business model depends on becoming inescapable, and they're not being honest about how their services collect our data.