The title of the puzzle, which happens to be the motto/slogan of the Sporcle website, and the word trivia all clue to get to there, as there is really nothing to put into the grids in the puzzle. On the Friday afternoon of the Mystery Hunt (approximately
5PM), under the account SetecAstronomy, Sporcle published a quiz entitled “M” “H” People
, with the tagline “These people are no Mystery if you Hunt around your brain for them.”
When you place all the M first names in one grid and all the H second names in the second grid, each grid yields a clue.
Grid M gives “SNL Actor Tracy” = Morgan
Grid H gives “NBA’s Grant or Lawyer Anita” = Hill
Which put together gives the answer: MORGAN HILL