NBC's "Today" show tech editor Corey Greenberg was paid $15,000 by Apple Computer to praise the iPod during an appearance last July. Naughty, naughty. Greenberg, an NBC contributor, confirmed yesterday that he has received payments from Apple as well as Sony, Hewlett-Packard, Seiko Epson, Creative Technology and Energizer Holdings, after his private contracts were disclosed in a report by the Wall Street Journal. Greenberg reportedly charged the companies $15,000 apiece to talk up their products on news shows. Last July he praised the iPod as as "a great portable musical player . . . the coolest-looking one" and suggested a compatible device to "share your music with other people." [Agenda Inc.]