How does Facebook collect data to feed you with content you’ll like and keep you coming back? Well, now there’s an app.

Data Selfie is a Chrome extension that helps you discover how Facebook tracks your activity, and how Facebook learns about your personality and habits.

The extension monitors your Facebook interactions for patterns and then crunches the collected data into a insightful report.

Data Selfie essentially tracks your activity – what you look at, how long you look at it, what you like, what you click and what you type.

The Data Selfie dashboard shows your Facebook activity broken down with color coding to highlight aspects about your usage.

The extension also uses analytics to guess stuff like your political affiliations as well as shopping and nutrition preferences. (scary!!)