I find this... a bit disturbing:
The BBC wants to make videos that change to suit whoever's watching. It's exploring the idea through a research project called Visual Perceptive Media, which has set up a way to alter everything from what's in a video to what a video sounds and looks like depending on a viewer's interests. It starts with a personality quiz: an app asks questions about whether you're shy or outgoing, lazy or hardworking, and a few other basic traits. It'll also analyze your music library or ask about your music tastes. Combining that information, it'll determine what group you fit into and serve you a different cut of the video you're about to watch.