Preston Gralla

Preston Gralla is the author of more than two dozen books about computers and the Internet, including How the Internet Works, Windows XP Hacks, and several on Internet shopping, bargain-hunting, and auctions. He has been a columnist for ZDNet/Cnet, and is currently a columnist for TechTarget.com and PriceGrabber.com. His commentaries have been featured on NPR's All Things Considered, and he has appeared on television and radio networks and shows including the CBS Early Show, CNN, MSNBC, and ABC World News Now.