You wanna know why metadata is important? What metadata can do?
Go read private detective stories.
Go read Oracle comics.
Think about the fact that with nothing more than the kind of imagery you find appealing, the kinds of media you enjoy, and maybe 3 days, I can probably find YOUR Account, on any given website on the internet.
Then remember that I’m not as fast a computer algorithm.
Now go watch Person of Interest before the President has it cancelled.