by Allison Linn, Senior Writer

What do Warren Buffett, Oprah Winfrey and Ludacris have in common?

Yes, they are each wealthy celebrities who can likely afford whatever they want.

But one advertising agency executive believes they also are among the top influencers of a more careful form of consumerism Americans are adapting in the wake of the worst recession since the Great Depression.

“Hyperconsumerism is dead, but consumerism will always be alive in the U.S.,” said Andrew Benett, global chief executive of Arnold Worldwide and co-author of a new book “Consumed: Rethinking Business in the Era of Mindful Spending.”

The idea of a new frugality has been brewing since the housing bubble burst, but what do Oprah and the Oracle of Omaha have to do with it?

Read more on MSNBC.com.