Usability 
Alibris clams to be the largest independently owned and operated online marketplace for used books. The site lists over 120 million new and used books, including textbooks and rare and collectible titles. as well as music, and movies,
The site's mobile view only seems to support the iPhone, Android, WebOS and BlackBerry 6. Other mobile browsers including Opera Mobile and Mini and the bada and Symbian browsers are served the desktop version by default.