This column highlights the most useful and interesting business and financial commentary on technology every day.   GigaOM Link: Whoa! Sinofsky Windows Chief and Taskmaster Leaves Microsoft “This is a shocker. Steven Sinofsky the prickly but super-efficient executive famous for delivering big products on time for a company not known for meeting production schedules is leaving Microsoft (NASDAQ:MSFT). Now. His departure comes just a few weeks after the debut of Windows 8 the massive project he led. “The news was reported by AllThingsD’s Ina Fried. Sinofsky’s role will be taken over by — get this — two women. Tami ...