On behalf of the Query Optimization Team for Microsoft's SQL Server product, welcome to our humble virtual abode. We decided that we'd start a blog to help people better understand query plans, physical schema design in databases, making your application perform better, and anything else related to query optimization. Furthermore, we'll be posting tips and tricks that we learn from our work with customers so that others can benefit from those exchanges.
I'll be posting a few initial entries to prime the pump, and then I will be asking others from the team to post interesting ideas as they see them in their work.
SQL Server Query Optimization Development Lead