Ryan Schinman, founder and chief executive of Platinum Rye Entertainment, the world's largest broker of celebrity talent, models, recording artists, sports figures and other celebrities for ad campaigns and p.r. events, says the stigma that once kept Hollywood's A-list from promoting goods is all but nonexistent today.

FORBES: Welcome to Shillville

Fox himself embellished the Keaton myth by adding the middle initial P to Keaton's name as an ad lib during an audition, according to IMDb.com.

CNN: What would Alex P. Keaton do?

Chang's began seeing the results, the company quickly shifted that entire Twitter ad budget to mobile, said Jason Miller, digital content and community manager for P.

WSJ: Twitter's Mobile Ads Begin to Click

With little notice, 802.11 is already available at millions of sites, growing in office networks in the ad hoc way that Napster did in computers last year ( See Dvorak column, p. 60).

FORBES: Mr. and Mrs. Network

Its most memorable ad campaign--"Celebrity in a Suitcase" featured folks like the late House Majority Leader Thomas P. (Tip) O'Neill and game-show hostess Vanna White popping out of luggage in a motel room-was launched more than a decade ago.

FORBES: No Time To Relax