Greg Holden has written extensively about eBay, online auctions, and e-commerce. He has been a PowerSeller on eBay and is the founder and owner of Stylus Media, his own, small, Internet-based business. He is the author of more than 30 books, several of which focus on eBay. He writes a regular column for the Web site AuctionBytes. he also has written articles for publications that include CNET, Forbes, PC World, and Entrepreneur. Besides that, he is a tireless bargain hunter who collects fountain pens, hats, musical instruments, and watches, among other things-many of which he's bought on eBay.