And the way ads have progressed on Internet, I'd hate to see that happening in ebooks.
First it would be a small bar on the bottom. Then a small bar on the left. Then the bottom bar will get bigger. Then a third will be added on top. Then the one on the right will start flashing. Then the words will have little pop up messages with links. Then a fourth bar will be added in the middle. Then you will have the one on the top expand itself to full page and requiring you to scroll down and click on close before being able to read. Then the one in the middle will become animated and be constantly moving on your screen, and it'll have a tiny 'x' so that any attempt at clicking on that 'x' will result in a miss-click and a redirect to the ads' page.
And next thing you know, reading is a game of 'Can you spot the content?', followed by adblocker and popup blocker being a standard in a tablet/ereader.
