From Shelf Awareness - Jan 7, 2010
"The Wall Street Journal outlined threats to Amazon.com from Apple and Google. "Of the three, Amazon appears to be the most vulnerable to new competition, both because of the breadth of its business and e-commerce's increasing importance."
"These threats include Apple's forthcoming e-reader and Google's plans for an e-book store to be called Google Editions. An interesting aspect of Google Editions: "Google plans to let independent bookstores sell e-books through the service, buttressing their ability to compete with Amazon.' "