Many stack exchange sites have associated site blogs for things that don't quite "fit" with the Q&A format of the main site. I think there are quite a few interesting topics we could cover in a blog if we have enough folks interested in contributing posts.
There are a some guidelines that Stack Exchange provides for starting a site blog, and I think we hit all the high points.
I've left a CW answer here to suggest topics (and volunteer yourself as a writer if you're so inclined) - Ideally I'd like to see us able to put out a post every other week which should be do-able with 3-4 interested contributors.