Well written article, but a couple of points.

It doesn't really get into Best Practices much at all. With the exception of some SQL 2000 best practices that will prevent an upgrade, there's almost nothing here in terms of the list of "do this", "don't do that" and "this would be a good guideline to follow."

Also, you talk about database mirroring, yet, according to the documentation provided, this is not currently supported by MS so this can hardly be considered a "Best Practice."