The 'book' concept is changing

John Naughton has noted that the concept of a "book" is changing.
The iPad has the media attention for the use of video and animation. Print journalists seem to think that paid content models can continue in this sort of way.
Meanwhile Adobe makes more sense. I am still trying to work out what Acrobat X offers. Not sure who likes the content page as animation, the idea of a portfolio. But embedded video could work well when the file size issues are resolved. My test so far is over the limit for Adobe to store online and only has three pages.
Closing down now, but more next year as at BETT and Learning Tech. Olympia would work better with both shows at the same time. Total Olympia as a tech show for all ages.