According to internet research report, most people don't care about internet privacy while they are surfing online, even they knew internet has some dangerous sites, and over-trust security software. They think they will survive online. Actually, something seem are not danger, but they play tricks that you never know.
ShareMeNot is an add-on of Firefox, it blocks some social networking button on websites, like Facebook, Google, LinkedIn, Twitter, Digg, StumbleUpon. Why should we have to block these buttons? Most people don't know these buttons track your online browsing activities on site, even if you never click the buttons and even you disable third-party cookies. If you really care about your online privacy, this is a good add-on to stop something track your internet behaviors. After you installed, you don't have to do anything, it automatically blocks these buttons on each website.