Mozilla has an amazing new add-on for Firefox:
Users who activate Lightbeam will be able to see a real-time visualisation of every site they visit and every third-party that is active on those sites, including commercial organisations which might potentially be sharing your data.
Mozilla wants users who install the Lightbeam add-on to Firefox, to crowd-source their data, to produce the first “big picture” view of web tracking, revealing which third-parties are most active.
Lightbeam promises a “Wizard of Oz” moment for the web, “where users collectively provide a way to pull back the curtains to see its inner workings,” Mozilla claimed.
I’d like to see this come to all the browsers, but if you’re a Firefox user you should download this as soon as it becomes available.