Opera Mini actually saves your money during your browsing experiences. The browser logs itself on when prompted by the user, then off the net when you are busy reading web content.
The instant the browser logs itself off the net ensures money that would otherwise be wasted is saved instead. I strongly recommend the use of this browser for both tech savvy and the new user.
Bookmarks are also saved virtually and can be restored through a synchronization feature such that chances of losing your links are non-existent.