Apparently not content with having one team blog, the Windows Live Agents team have another blog on the MSDN blog network. This new iteration starts off with a series of best practice posts for developing Live Agents and then offers up some training videos:
Quite why they need two blogs that seem to deliver similar content (unlike the consumer oriented MessengerSays blog and the Messenger developer blog) is, well, odd. But hey, just means another blog we can add to The List.
Update: From the sheer volume of posts (over 50 since I posted this!) that have gone up on this blog over night and the content of the entries it looks like they are actually migrating the blog from Live Spaces to MSDN rather than have them in parallel.