I'm getting an ipod touch soon and I know I will put some kind of film over the screen, Im not sure what brand yet. But I was wondering if when you remove the film, is there any residue from it? I may decide to take it off and I don't want any crap on the glass. Also, I have some iKlear cleaning stuff that I use for my macbook and former ipod, is this stuff ok to use on the touch's screen? thanks!