Later, I asked one of those handing out the tickets what criteria she used for selecting her guests . The answer was simple - they had to have a "twinkle in their eye". I pondered what kind of behaviours one might use to identify likely customers of alternative brands and found myself returning to the notion of the "killer question" - the one single thing that marks out their potential Sheba cat food apparanetly did it years ago by defning their audience as "those who buy their cats Xmas presents".
All of which reminded me that more often than not we dumb down our targeting strategies by looking at what audience characteristics we can readily measure, rather than what makes them unique.