Its not free. U pay with ur data. Worry abt NSA? Worry abt companies too. // via bit.ly/1WbspjI // The researchers detailed many troubling aspects of Facebook’s data collection practices, including evidence that one of Facebook’s cookies is stored in every browser that visits a site with a ‘Social Plugin‘ (the embedded ‘Like’ and ‘Share’ buttons), regardless of whether or not they are a Facebook user. [...] Facebook is no longer just a social media website, it is a massive advertising business invested in tracking everyone’s consumer spending habits, on the internet and off. [ FB has also a monopsony; if you don't agree to TOS as user, don't use us. (Same told to advertisers w Newsfeed changes algo) PS we track u anyway. FB owns +70% of social media adversing spend, advertisers can't get around it ] [...] Our focus with Atlas (bought from Microsoft) is to take that technology and enable us to improve our ability to connect ad impressions to purchase behavior both offline & online,