Excellent blog! Though the design is a bit too minimalistic for my taste. As far as the writing is concerned, may I just say...WOW!! It's brilliant. Very clear and precise, but engrossing at the same time.
I would say add more widgets (change the template if you have to), to mak navigation and commenting easier. Also, I agree with Snuffles. Some personal information about you would be an excellent addition to the blog.
Also, how can join your blog? It's in my niche, and I would love to follow it. But there seems to be no way to do this, other than the RSS feed, which I never use! Please do add a followers widget.
That's all. I hope you find this useful!