Do you think ebooks will ever overtake printed book sales ?

No, because there are people out there who cannot afford ebooks. There are people out there now who can't even afford TV's or computers, even people in America. Then there are people like me who don't want ebooks. I prefer the relaxing feeling of a book in my hand that I grew up with. I despise technology. It's so anti-social. Printed books will always be, even if sometime in the future printed books just might be ways they let the less fortunate people read.