The popular electronic book device Amazon Kindle launched by Amazon.com will offer an additional set of 5,000 books; it already features 120,000 downloadable titles.

The new books will be available due to a deal that Amazon.com managed to close with publisher Simon & Schuster Inc.

Amazon’s Chief Executive Jeff Bezos attended this week’s BookExpo America convention in Los Angeles and, according to the Associated Press, praised the benefits of buying electronic books, saying that: "That's one of the great things about electronic books. They don't go out of stock."

The statement was connected to the recent sold out stocks of the hard-copies for the book "What Happened: Inside the Bush White House and Washington's Culture of Deception."

Amazon.com is an American electronic commerce company based in Seattle, Washington. It was founded by Jeff Bezos in 1994 and was one of the first major companies to use the Internet for selling goods.

The bussiness started with an on-line bookstore and soon added several other categories of products including DVDs, computer software, furniture, food, video games and toys.

Its Kindle device was launched last November featuring an electronic paper display and now retails for $359, after a $40 discount was announced earlier this week. Momentarily, it is only sold in the United States.

At this point, the Kindle e-books account for about 6 percent of the site’s total book sales and the numbers are expected to significantly increase over the next few years.