ShareMeNot is 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 interact with them.

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.