"What is it that most people need, but don't know that they need?"

We were talking about Google's six billion dollar bid for Groupon, and she suggested that I think up an online business idea that would make us rich.

"What is it," she asked, "that most people need, but don't know that they need?"

"That's easy," I said, "What most people need is to be slapped upside the head. The hard part is getting them to pay."