3quarksdaily has a nice long look at software "chrome" (not the browser as they point out several times) and why obsession on making digital analogs to physical objects really really sucks.
This is the iBooks app. Notice how lovingly the designers have made it look like you are in the middle of reading a physical book by drawing a little pseudo-3D evocation, down each vertical side, of the pages you have read and the pages you have still to read. What do you think this looks like when you are on page 2 of a book, or 2 pages from the end? I'll tell you what it looks like: exactly the same.