One of the most popular recent television shows is CBS's "The Big Bang Theory," broadcast on Thursday evenings. In addition, the most recent 5 shows are available online on cbs.com. As with the live CBS broadcast, commercials are interspersed in the show - based on what I can tell at the same places as when broadcast in its normal slot. For decades, the entire broadcast television (and radio) business was based on advertising.

Friday I had lunch with a friend who does marketing for a pharmaceutical company. He described to me the process by which he manages major ads. "Ads are very expensive," says he. "First you have to develop the concept, which can be $10,000 or more. Then the production costs for the real ad are $100,000 or more. Finally, the actual costs to air the commercials easily can run $500,000."

Great technology companies have been built on advertising: Google, Facebook, Yahoo (in the old days), not to mention many a magazine, newspaper and television network. I have always loved the operational side of ad networks. They require building and managing a systems whose data throughput and reliability requirements rival a financial pricing and trading system. I have managed several of those, and the parallels are quite strong. What truly interests me in advertising, though, is the brilliance of great creativity.