This column brings you the most interesting and useful business and financial commentary on technology from around the Web every day. What fun! Reuters Link: Greenlight's Einhorn Sues Apple Seeks Bigger Payout "Fund manager David Einhorn's Greenlight Capital sued Apple Inc (NASDAQ:AAPL) saying the company needs to do more to unlock value for shareholders. "Einhorn a well-known short seller is long Apple shares and said in a television interview on Thursday that while he admires the company it has a "cash problem" that it needs to fix. "Greenlight filed suit in federal court in New York to force Apple to modify a ...