An eBook is a book delivered as an electronic file. eBooks can be read on mobile phones, PDAs, PCs, laptops, Blackberries or dedicated eBook devices. Consumers purchase eBooks at online bookstores like Powells.com, as well as at eBook-exclusive vendor sites like eReader.com and Fictionwise. Once eBooks are purchased, they can be downloaded immediately, providing consumers quick and easy access to their favorite titles.