People love trivia/"did you knows" because people are usually engaged and focused these days to just one field or situation in their lives that getting even the tiniest details of something new is a breathe of fresh air. Did-you-knows elicit responses like "Really?!", "How come I didn't know what?!", or "I've been living wrongly all my life!" Still, one must always be critical of the new facts encountered because they might not be facts!