I find this not evil. If this is covertly used, that'd be evil. I agree with the argument "If you do it to extract information from your user to which they wou

I find this not evil. If this is covertly used, that'd be evil. I agree with the argument "If you do it to extract information from your user to which they would not consent, it’s evil." However, we tend to get caught up in the right-now and not think through consequences. If this were widely used, browsers would implement the same sorts of privacy controls they do around 3rd party cookies, JS, etc. This seems like a more semantic way to do tracking than many other techniques. It seems like it'd be easier for browsers to manage.