I'm not in your target audience, so I've seen very little of you guys' blog, but it certainly didn't feel marketing-driven to me.

I agree about Spolsky & Co. not being that technically strong, which is a little ironic given how much he's written about attracting the best programmers, etc. Still, although I don't read him regularly, I almost always enjoy when I do. And a lot of what he says about the software business is really helpful. Chris Dixon linked to a post of his the other day about lowering the price of complementary products which was a great example.