In case you are not aware, the new release of AVG anti-virus software, free and paid, includes a "Do Not Track" add on/plugin for your browser. Personally, I like it, not only does it block all analytics, it is also capable of blocking social sites, ad trackers, and so on. The default list includes:
Analytics -
Comscore Beacon
Facebook Connect
Google
LinkedIn
Yahoo
Social Networks and plugins -
Facebook Social Plugins
Google +1
LinkedIn Button
Twitter Button
Ad Networks -
24/7 Real Media
33Across
[x+1]
Accelerator Media
AddtoAny
Adition
AdReady
Aggregate Knowledge
Baynote Observer
Bizo
Brightcove
Brilig
BTBuckets
Collarity
Connextra
Criteo
Crowd Science
Dedicated Media
Didit Blizzard
Dotomi
Etology
ewaydirect
Fetchback
Gunggo
IndieClick
iPerceptions
MyBuys
NetSeer
Nooked
OrangeSoda
Reinvigorate
Resonance
Spot200
Veruta
ViziSense
WidgetBox
Ybrant Media
It also shows the number of services being blocked per page and who they are. And while the user can adjust the setting to allow/disallow, I suspect many may leave the defaults which basically blocks everything but the social links. While this is a boom for privacy advocates, I can see it having a negative effect on ad revenue and accurate analytics.
Marshall