Look, why is it so strange that Microsoft has a blog profiling people around the company who like their jobs? Are we supposed to cut ourselves every morning because we work for the "evil empire"? I don't understand why you think the site is somehow ridiculous, evil or insane. You know, of the 90,000+ people Microsoft employs, most of them actually like what they do.
Astroturfing implies that something is not true. Are you seriously arguing that people who work for Microsoft cannot possibly actually enjoy it?