Facebook has an Offline Activity Tool that supposedly shows what they know about you outside of Facebook itself. I'm skeptical they are actually showing anyone the full bit of information since they are known liars, but according to this "Prusa Printers" (they make 3D printers) is the only place that has reported any outside-of-FB information on me (and all I've ever done was look at their website, I don't own one of their printers nor will I ever based on this). From the link you can "disconnect your history" and "manage"...