Viral Marketing to Become the Norm?

An anonymous reader writes "One of the oldest advertising companies in the U.S., JWT, has just bought up all the Huffington Post's front-page ad space for a whole week. They are taking the unique approach of trying to create ad content interesting enough to make people want to watch, instead of the traditional ad agency approach of bludgeoning the user base over the head through interstitials and other forced ad techniques. Will the ad companies be able to put forth enough continued effort to make good ads that become viral, or is this just a short phase to gain publicity?"