more info on books for Sony reader...
"Google's e-books will work on the Nook,
Sony Corp.'s Reader devices and practically every other e-reading device except the Kindle. Google achieves this with the help of Adobe Inc.'s copy-protection system for e-books. That system is already used by public libraries and smaller online bookstores, but hasn't seen much interest from the major players. Amazon.com, Barnes & Noble and Apple all have their own copy-protection systems."
http://news.yahoo.com/s/ap/20101206/...dsZW9wZW5zZQ--