Kyoko Utsunomiya, an eBOOK Initiative Japan employee, displays a prototype model of the electronic book player which carries full color comics, at the company's headquarters in Tokyo on April 16, 2001. (Photo by Yoshikazu Tsuno/AFP/Getty Images)
Foxit's eSlick E-Reader
An employee displays company Foxit's eSlick e-reader at the world's biggest high-tech fair in Hanover on March 3, 2009. (Photo by John MacDougall/AFP/Getty Images)
E-Paper
A fair worker presents an e-paper, the newspaper page on an e-book screen, at a stand at the Leipzig Book Fair on March 12, 2009, in eastern Germany. (Photo by Sebastian Willnow/AFP/Getty Images)
Wizpac E-Book
A fair worker presents an e-book by Berlin-based company Wizpac at a stand at the Leipzig Book Fair on March 12, 2009, in Germany. (Photo by Sebastian Willnow/AFP/Getty Images)
Wefound E-Reader
A woman presents the E-Reader "Wefound" with Chinese characters at the 61st edition of the International Book Fair in Frankfurt, Germany on Oct. 14, 2009. (Photo by Thomas Lohness/AFP/Getty Images)
Samsung E6 E-Book
An attendee examines the new E6 e-book reader by Samsung during a press event at the 2010 International Consumer Electronics Show at the Venetian on Jan. 6, 2010, in Las Vegas, Nev. (Photo by Ethan Miller/Getty Images)
enTourage eDGe E-Book
The enTourage eDGe e-book is displayed at the 2010 International Consumer Electronics Show at the Las Vegas Convention Center on Jan. 7, 2010 in Las Vegas, Nev. (Photo by Ethan Miller/Getty Images)
Astak PocketPRO E-Book
An Astak PocketPRO e-Book reader is displayed at the 2010 International Consumer Electronics Show at the Las Vegas Convention Center on Jan. 7, 2010, in Las Vegas, Nev. (Photo by Ethan Miller/Getty Images)
E-Reader
A woman shows on March 26, 2010, an electronic book during the Paris book fair at the Porte de Versailles exhibition center. (Photo by Joel Saget/AFP/Getty Images)
E-Book
A man tries an e-book on display at a booth of the Taipei World Trade Centre where Asia's biggest information technology trade fair is being staged on June 2, 2010. (Photo by Patrick Lin/AFP/Getty Images)
Sony E-Reader Pocket Edition
A visitor tries out a an e-reader Pocket Edition by Japanese electronics giant Sony at the 50th edition of the "IFA" electronics trade fair in Berlin on Sept. 2, 2010. (Photo by John MacDougall/AFP/Getty Images)
Sony E-Reader Touch Edition
An employee displays an e-reader Touch Edition by Japanese electronics giant Sony at the 50th edition of the "IFA" electronics trade fair in Berlin on Sept. 2, 2010. (Photo by John MacDougall/AFP/Getty Images)
Amazon Kindle 2
People test a Kindle 2 after a press conference unveiling latest version of Amazon's popular electronic reader, the Kindle, in New York on Feb. 9, 2009. (Photo by Emmanuel Dunand/AFP/Getty Images)
Barnes And Noble Nook
The new 'nook' digital reader is displayed at a launching Oct. 20, 2009, in New York City. (Photo by Spencer Platt/Getty Images)
Toshiba Libretto W100
Toshiba employees unveil new dual touch-screen notebook computers "Libretto W100" at a Tokyo hotel on June 21, 2010. The Libretto can be used as a double-page electronic book reader (L) or conventional mini notebook PC with touch-screen keyboard. (Photo by Yoshikazu Tsuno/AFP/Getty Images)