A free Google Chrome extension that monitors and analyzes your Facebook use

Data Selfie for Chrome allows you to collect and analyze data from Facebook.com. When you use your Google Chrome browser to access Facebook, the Data Selfie for Chrome extension collects information about your interactions. It then sets them out in a manner that allows you to analyze and evaluate them, such as showing you which posts were the most liked and shared. If you log into Facebook often enough, then the Data Selfie for Chrome will even make personality predictions about your interactions, which helps show you how you and your profile appear to other people. It is also a handy tool for examining exactly what Facebook is learning about you by how you use your profile. One of the biggest benefits it has for hardcore users is to show just how much time you spend on Facebook.