Now this should be interesting - our CTO, Ray Ozzie, has started a public blog on Spaces (of course) where he plans to enter in to public discourse about projects and stuff at Microsoft. Clearly smarter than the average bear, this should prove an interesting one to monitor.
Ray Ozzie was the man behind Lotus Notes which was a pretty groundbreaking product (I used it at two pharmaceuticals companies I worked at before joining Microsoft). As our chief technical officer Ozzie reports to BillG and as his bio says he has "has responsibility for influencing corporate communications and collaboration strategy, applications and platform infrastructure, and for helping drive Microsoft's software-based services strategy and execution across all three of the company's divisions". He was a driving force behind the recent Live annoucements - that alone should make his blog a good read.