Everywhere you go online, you’re being tracked. Almost every time you visit a website, trackers gather data about your browsing and funnel it back into targeted advertising systems, which build up detailed profiles about your interests and make big profits in the process. In some places, you’re tracked more than others.In a little-noticed change at the end of last year, thousands of websites started being more transparent about how many companies your data is being shared with. In November, thos...