Did you know that social media buttons allow Facebook, Google, LinkedIn, and others to track your online browsing activities on every site that includes one of these buttons, even if you never click the buttons and (in some browsers) even if you have third-party cookies disabled?
ShareMeNot is a Firefox add-on designed to prevent third-party buttons (such as the Facebook “Like” button or the Twitter “tweet” button) embedded by sites across the Internet from tracking you until you actually click on them. Unlike traditional solutions, ShareMeNot does this without completely removing the buttons from the web experience, so that you can still use the buttons when you want to.
Please find more details at http://sharemenot.cs.washington.edu/.
Please submit bug reports to the ShareMeNot Google Group: http://groups.google.com/group/sharemenot