The first I mentioned was "Walking Actors," the 1/2 of the US population employed by service and information based industry - hence their need for products and services that make them a better them - a huge chunk of the population that's little understood.
Now I'd like to introduce you to another "Culturally Influential 'Developmental' Consumer Group" we can recruit for use in developing new products, services, positioning strategies, media properties, content, etc.
Let's call them the 'THUMB TRIBE' referring to the masses of young people around the world that use mobile phones for texting, email, entertainment and mobile phone conversations. They've grown up in a world that is dynamically different from the one we lived in. What kind of cars do they want? And what gadgets? They don't even use computers - computers now percieved as going the way of B&W television. At what point do their childhood toys and t'ween technology devices merge? And what future outcomes do they, and marketer-manufacturers expect?