My PM colleague Nicholas Allen is certainly on my list for "best blogging newcomer of 2006". He started in February, got hooked, and I am not sure whether he actually did leave the keyboard since then.
Nicholas just started a blog series that explains the system-defined (formely known as: standard-) bindings that we ship with WCF. He's got three of them explained now and my guess is that there are more to follow:
While you are there, make sure to subscribe to Nicholas' feed and also take a look around and look at earlier posts. His channel category is a gold mine and the same can be said of the transports and ... everything there is fabulous stuff.