Several colleagues from my team are also running modeling-related blogs:

Keith Short (http://blogs.msdn.com/keith_short) - on modeling, Visual Studio Team System 2005 and software factories
Stuart Kent (http://blogs.msdn.com/stuart_kent) - on approaches to model driven architectures
Alan Cameron Wills (http://blogs.msdn.com/Alan_Cameron_Wills) - on domain specific languages
Ramesh Rajagopal (http://blogs.msdn.com/r.ramesh) - on the Class Designer in Visual Studio Team System 2005