Daiz wrote...
This kind of feedback would belong to the stickied reader help thread, but to answer your question of being able to hide the address bar, that's what the fullscreen button in the top bar is for, assuming you are on Android. However, if you are on iOS, then there's nothing that can be currently done about it, as sadly iOS doesn't have support for the HTML5 Fullscreen API.
iOS don´t let fullscreen API yet, but you can do it with a trick.
"Ever since the launch of the iPhone, users have been able to install Web Apps to the home screen and have them launch as full-screen web apps."
http://www.html5rocks.com/en/mobile/fullscreen/