Busweek: LinkedIn and Reid Hoffman: Recession Ready

"Pull up a chair." Reid Hoffman waves a big arm toward his computer. It's not easy to maneuver in this office strewn with books, wires, and empty Amazon.com (AMZN) boxes. The 41-year-old Hoffman, wearing sneakers and black shorts from a morning workout, opens up his page on Linked¬In, the social network for professionals that he founded six years ago. His inbox is jammed with solicitations for meetings and funding. "Here's a guy from Minneapolis who wants me to help on a social-good project he's doing." He reads for a moment and then shakes his head. "Looks like it's based on bad math."