Ammon doesn't have a blog, because he prefers to focus on work.

I kind of understand him, since I've been noticing that blogging takes some time and effort that could be spent on working/relaxing after work. Not to mention if the blog grows out of its proportions, like Ammon's blog would, most likely.

However, what Ammon has already put online in one way or another, is as valuable as it can get.

Well, with blogging accessing the experts became easier, but I guess there still are some gems left out there, including the oppposite: Kathy Sierra, who doesn't write any more (I think?).