Rory Sutherland and Glen Weyl apply quadratic voting to market research, with an excursion on the voting behavior of bees (yes, they vote quadratically).  Sutherland is vice-chairman of Ogilvy, and a famous market-research guru. You can read an interview of him here (“Tweed is like sex. When it’s good, it’s really, really good. But when it’s bad, it’s still pretty good.”).