Originally Posted by Zarich
First off there are a whole lot of videophiles that will completely disagree with your statement.
Secondly epub is not more technically advanced. It is just open. Both are just simple to manipulate code.
Wrong on both accounts.
As for ePub, there is a good amount of things you can do that you cannot do with Mobipocket. For a quick example, have a look at Zelda's ePub edition of Three Men in a Boat
(posted on MR) to see some things ePub can do that Mobipocket cannot.