The deal may have first been announced somewhat quietly last month, but now that Sony's come out with what's arguably its most attractive e-reader to date, the availability of over a million public domain books in the Sony-friendly EPUB format is sure to garner a fair bit more attention. As Google announced on its Inside Google Books blog, those books are now all available for download starting today and are, of course, completely free and able to be used on the EPUB-supporting device of your choice. The move also takes on a particular prominence in light of Google's
