Here's a blog post about it. You see it when you register your books: http://robpickering.com/2010/07/inexpensive-ebooks-from-oreilly-media-112 http://robpicker

Here's a blog post about it. You see it when you register your books: http://robpickering.com/2010/07/inexpensive-ebooks-from-oreilly-media-112 http://robpickering.com/2010/07/inexpensive-ebooks-from-orei...