How eBay CEO Jamie Iannone transformed the company, refocusing on power buyers in categories with especially high resale demand like trading cards and sneakers (Kim Bhasin/New York Times)

Kim Bhasin / New York Times: How eBay CEO Jamie Iannone transformed the company, refocusing on power buyers in categories with especially high resale demand like trading cards and sneakers — The online marketplace has remade itself by focusing on collectibles and other high-end goods — and attracted an unwelcome takeover bid from GameStop.