How to find out what Facebook thinks you like
In an effort to help you find out what information Facebook has on you, ProPublica has designed a Chrome extension. The extension shows all of the data that Facebook has on its users. It even lets you rate the information for accuracy.
If you want to add the extension to your Chrome browser, just click on the blue box in the upper right-hand corner. A pop-up box will ask you to confirm that you want to add the extension.
In the past, we told you how to opt-out of Facebook tracking. If you decide to opt-out, it might still be a good idea to add the Chrome extension, just to keep an eye on things.