For a Watch Dogs video game promotion, Ubisoft set up the Digital Shadow campaign, showing the kinds of dirty secrets that can be pulled using only what's shared on your public Facebook profile. It's often said that you should be wary of the kind of information you share online, and this web app definitely shows why.
Using the Digital Shadow online app, the you must provide access to your public social media profile in order to proceed. Once the app scans through the data, it pulls up results to show that "We Know Who You Are," and "We Know Who You Care About." The experience also makes an attempt to guess your password and come up with a personal profile to totally figure you out.