Bad jQueryMobile Back Button
uxformobile.com
uxformobile.com
http://jquerymobile.com/blog/2011/05/13/jquery-mobile-team-u...
It's a tough choice and a touch coding experience too (have you tried using the history api to cover the case where the user presses the FORWARD button?! ergh!).
there are problems with the back button, and there are some things you dont want to have a literal stack of pages (modal dialogs commonly), but the fact that it doesnt by default do a completely different thing from why anyone who has used a web browser expects isnt exactly a bad thing.