It's the 'take your library anywhere' appeal of e-Books that is behind the incredible rise of products like the Kindle, Nook and of course Apple's iPad.
There will always be printed books, thank goodness, but the convenience and choice of e-Books means that sales of digital books will equal those of print any day now.
Best selling readers include Kindle, BeBook Neo, Barnes & Noble Nook, Alex eReader, Pandigital Novel, Kobo eReader, Cool-Er and Astak Pocket Pro. Or use a palm reader or Apple iPad. See the the panel on the right and click through from the Amazon link of your choice to compare readers.
Or you can see a comparison of the main e-Readers here.
Libertas, Goliath and Cell Wars are available as e-Books in any format. At Smashwords, you can choose HTML or JavaScript for online reading, .mobi for Kindle, the open industry standard Epub, PDF, RTF, LRF for the Sony Reader, Palm Doc for palm readers, or even just plain text. For Libertas and Goliath go to my author page at Smashwords, and choose which book (or both) from the list of options. For Cell Wars, visit the Adam Fox author page.
To get Cell Wars for just 99 cents go to Smashwords and enter coupon code TR89Z at checkout.