RequestPolicy is a Firefox extension that gives you control over cross-site requests. --- Be sure to look at the dev-1.0 branch as that's where all of the interesting work is happening. See also: https://www.requestpolicy.com/1.0.html
Many sites use CDN's for static content (css, js, etc). It will be good to allow requests to ajax.googleapis.com, but without sending referrer. So, dependent sites will work normally, but Google will not know which site exactly i'm visiting.
For paranoia users (who think that google can replace jquery to malicious script) it will be good to create option "replace url with user-defined rules" (for ex, //ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js to file://c:/jslib/jquery.min.js
Many sites use CDN's for static content (css, js, etc). It will be good to allow requests to ajax.googleapis.com, but without sending referrer. So, dependent sites will work normally, but Google will not know which site exactly i'm visiting.
For paranoia users (who think that google can replace jquery to malicious script) it will be good to create option "replace url with user-defined rules" (for ex, //ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js to file://c:/jslib/jquery.min.js