19% of U.S. adults now own tablets, the same penetration as for e-readers.
Analysts question whether it's good for the company, but consumers may like it.
A new type of news "story," Facebook takes charge, and tablets get affordable.
Do it fast, and add new value.
The e-book business is becoming popular for news organizations.
Old or previously unpublished content finds a secondary market in ebooks.
12 percent of U.S. adults now own an e-reader.
Will students pay hundreds for an e-reader, plus the book content?
3.7 million e-readers owned at beginning of 2010.