Research firm Forrester has released some numbers on E-book sales for the year, and they're betting that this is the first year where e-book sales will reach close to $1 billion. They also say that by 2015, that amount will pass the $3 billion mark. The survey questioned 4,000 people and indicated that more and more people get their books in digital form. While only 7% read books in e-book format now, they spend a lot of money on them, and that figure will continue to grow. It seems the most popular device to read e-books on is the desktop computer, followed by the Amazon Kindle, Apple iPhone and Sony eReader.