Love query optimisation? The SQL Server Query Processor team have started a new blog "Tips, Tricks, and Advice from the SQL Server Query Processing Team". They also link to an old blog I hadn’t come across before which appears to have a ton of information! It’s going to be a late night!
On a side note, a new beta (1.0 build 145) of Windows Live Writer is available. I’m using it for this post, so if you are reading this, it worked!