> most production servers i encounter that serve google's copies of jQuery also serve GA. i know this because i have to manually allow those requests using Requ

> most production servers i encounter that serve google's copies of jQuery also serve GA. i know this because i have to manually allow those requests using RequestPolicy. yes, they're technically different products. but that wasn't my point. so...when you said "in exchange for" you meant that some sites also use Google Analytics? > check out: https://sites.google.com/a/chromium.org/dev/Home/chromium-security/client-identification-mechanisms#TOC-Lower-level-protocol-identifiers https://sites.google.com/a/chromium.org/dev/Home/chromium-se... That's not a page of "Google's SSL-based tracking" methods. That's an attempt to enumerate ways browsers leak information.