That's right. It's available for free! The Kindle version is still selling in the Kindle Store, but I'm sure that savvy people can easily figure out how to get the free PDF or ePub on their Kindle device.
What incited me to give it away for free was that practically no one was buying (total amount of sales was five people). That made me realize that the money I did get from the occasional rare purchase wasn't worth it. I also discovered I didn't want to be the person who monetizes others' value instead of creating value of his own, especially since I know I'm capable of writing my own value.
Even so, I'm guessing a lot of people aren't taking advantage of this opportunity. For one thing, very few people know about this (that was a key reason that there was so few buyers). Another thing is that there are still only a select group of people who have e-readers and appreciate the value of having Steve's blog in an e-book. For most people, an e-book still says: "cheap person trying to sell me something so that I strain my eyes on the computer".