Usability 
Big publisher Simon & Shuster's mobile catalog is seachable and includes a synopsis, author information for each title along with links to buy the book the from Amazon, Barnes & Noble or IndieBound. There are also links to purchase most titles as eBooks from Amazon or B&N. The eBook links are currently broken, leading to the Kindle or B&N homepage rather than the eBook's purchase page. Source: Mobility.mobi