Is outdoor game overkill coming?

Remember when the game show Who Wants to be a Millionaire was hot? There was wall-to-wall coverage of such trivia as which state had the highest per capita so-and-so, what percentage of the population was left-handed, and which side of a president's face was in profile on a certain coin or dollar bill. There were Regis Philbin impersonators aplenty and the term "phone-a-friend" exploded into the lexicon. What a bonanza. Here was show that cost little to produce, ran at an enormous profit, and br...