Privacy Badger is a browser extension by the Electronic Frontier Foundation, that prevents sites from tracking your visits across the web. It’s available for Chrome (the most popular browser among our visitors and customers), Firefox (second) and Opera (nowhere to be found).
While that’s fun while you are anonymous and not logged in to any social media site (for example, through Private Browsing tabs), it’s easy enough to await your “unique visitor cookie” to be aligned with one or more (social media) user names. Especially Twitter and Facebook and Google+ buttons on all sorts of articles can determine and use this information very easily — remember, they live off of analysis of vast amounts of data.
Install it now, and enjoy!