Software-engineering talent is flocking to Google and Yahoo. Business Week explores the possibility that the big two search companies are creating a brain drain on the rest of the industry. Google snapped up about 230 engineers last quarter. Some stolen superstars are Louis Monier, director of eBay, advanced technology research, and Kai-Fu Lee, a top-flight researcher at Microsoft. Yahoo hired dozens of top engineers, including Larry Tesler, former vice-president at Amazon.com. 'While the Internet leaders snatch up top tech talent, that creates headaches elsewhere. Some startups, for instance, say the talent drain has made their own hiring more difficult.'