Photo Gallery: DEMOfall 05 conference

Stanford "persuasive technology" researcher B.J. Fogg believes that the over-50 crowd online, especially women, will become avid users of YackPack , an asynchronous instant audio messager. "Our audience will pay for things that give them emotional satisfaction," Fogg said, who founded the company. The Web app will go into testing in mid-November, and Fogg is looking to make deals with organizations like the AARP.