There's been much talk about Chris, Sara, Brad and Adam all starting blogs recently on GDN, and I, like most of you I'm sure, am a subscriber.
Maybe others have already pointed this out and I'm just behind the times, but I just noticed there is now a Blogs link on the main GDN page. As you can see, there are a number of other new bloggers from all over the organization.
It's nice to see the blog thing catching on at Microsoft.. and here's hoping to see more jumping on the bandwagon in future!
Update: As Andrew pointed out in the comments, there are plenty of Microsoft employees who maintain blogs. I was referring more to an official site hosting and seemingly promoting their employees to blog.