One of the great things that has occurred in the last year or so is that the product groups over in Redmond have started blogging. Not only has this given the product group a public face but it has also meant that the product team can get feedback from the user community directly, this in my eyes can only be a good thing.
With that in mind, I am pleased to say that the Unified Communications product group has created their own blog which can be found at http://blogs.technet.com/uc/.
I have added it to my RSS list and recommend anyone interested in UC do the same. The Exchange team has a cracking blog and hopefully this team will follow suit.