As I posted at Cartoon Barry, Chris's comment has been selected by Ben P., Chris B. and myself as the winning contest idea.
Chris's idea was that;
the person who can take as many pictures of different people holding a piece of paper with your url on it over a 24 hour period? That would make a cool page on your site, many different people/ages/nationalities etc.
Ben picked this one, and we all agreed it was a very good idea.
So in the upcoming weeks, I will announce the final rules for this next contest.
Congrats to Chris and thank you for such a great idea!