SiliconVallaeys.com

At the unveiling of the large screen Kindle DX earlier this week, Jeff Bezos announced that Kindle sales represent 35% of total sales for books that also have a Kindle edition. That's up from 12% since the launch of Kindle 2 in February. Seems like eBooks might finally become mainstream.

Personally, I've bought way more books than I used to before I got my Kindle when it first launched. Some of the reason...

• I can carry them with me on the airplane without filling up all my carry-on
• I try more books I hear mentioned because I can instantly get a free preview on my Kindle
• At $10 each, I don't mind buying a book I might never finish
• I can flip between books very easily, making reading seem like less of a chore

I can't wait to see how they integrate ads into the large format device optimized for reading magazines and newspapers. Hopefully ads will help reduce the cost of content even further and maybe even help rescue the ailing newspaper industry. As reported in SiliconAlley earlier this year, the annual cost of printing and distriburing the NY Times newspaper to one subscriber is more than twice the cost of giving every subscriber two Amazon Kindles!