My copy of the book arrived a few weeks ago and is waiting (in a long line) to be read in the future, but I have read John Anderson’s blog for quite a while now and I think I grok the idea of Long Tail. It applies to blogs, just as much as it applies to sales of movies, music or books.
As for books, the future is publishing-on-demand. No need for stokpiling books. If you use a publisher like Lulu.com, you can easily publish your own book, as well as get anything available in two work-days. You can even win a prize if you turn your blog into a self-published book.