After announcing that it would soon start blocking cookies from third-party advertisers by default in Firefox, Mozilla has walked back on its plans while it continues to test the system. In a blog post, Mozilla's Brendan Eich said that the patch needed more testing and data in order to refine it for release. "The idea is that if you have not visited a site (including the one to which you are navigating currently) and it wants to put a cookie on your computer, the site is likely not one you have heard of or have any relationship with," he said. "But this is only likely, not always true."
Eich cited false positives — cookies from a site you visit being blocked because it has multiple addresses — and false negatives, in which an ad is...
via The Verge - All Posts http://www.theverge.com/apps/2013/5/17/4341466/mozilla-delays-blocking-advertiser-cookies-in-firefox
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