The brains behind Yahoo Boss , a young engineer named Vik Singh, is leaving Yahoo to become an entrepreneur-in-residence at Sutter Hill Ventures. Earlier this year, Singh was named to Technology Review’ s 35 Under 35 list at the age of 24. Singh is exactly the kind of talent Yahoo should be trying to hold onto, but that is hard to do now that it is ceding search to Microsoft .

Singh is more diplomatic. Contacted for comment he confirms, “I’ll be starting next week actually. I’m really pumped but I’m going to definitely miss Yahoo! It’s been such a great company to work at but I just got this really bad case of the entrepreneurial bug.” Yahoo Boss, which was largely Singh’s idea, is one of Yahoo’s most successful projects among developers. It