Did you all see this article:
Consider also the Sony Reader, which has been a modest success: Sony claimed it was "exceeding expectations" and that e-book sales were outpacing music sales at its online store, as of January 2007. That said, who buys music from Sony's online store? Sony reportedly has a new, wireless Reader in the works, too, so there appear to be at least some legs in this market.
http://tech.yahoo.com/blogs/null/59794