The new Google E-books features include: font selection, font size, line spacing and day/night reading mode. Google lets people buy its eBooks from other booksellers, for now, only a few of them are in the partners program: Powell’s, Alibris and participating members of the American Booksellers Association.
There are two big differences between Google’s apps and all of the others. One is that it offers a web version of its application, making it accessible to anyone with a desktop browser and on a relatively wide range of mobile devices (user experiences may vary). The second is that it lists page numbers and allows readers to quickly switch to see the actual scanned (rather than flowing text) page so that they can cite the printed edition rather than the electronic edition, if they so prefer.
In the official information that we received from Google, there was still no word on the revenue share the publishers or the independent bookstores will get. Try the apps for yourself and let us know what you think. Here's the link to Google eBookstore: http://books.google.com/ebooks