From Electronic Frontier Foundation: 3rd party advertising and tracking firms are ubiquitous on the modern web. When you visit a webpage, there’s a good chance that it contains tiny images or invisible JavaScript that exists for the sole purpose of tracking and recording your browsing habits. This sort of tracking is performed by many dozens of different firms. In this post, we’re going to look at how this tracking occurs, and how it is being combined with data from accounts on social networking sites to build extensive, identified profiles of your online activity. · Go to How Online Tracking Companies Know Most of What You Do Online (and What Social Networks Are Doing to Help Them) →