I've finally convinced my parents to purchase me an Invisible Shield, but won't be getting it anytime until next week...(Pay day I guess?) So I have a few questions about Invisible Shield... 1. The main one...is it worth getting? Will it truly prevent scratches? 2. How easy is it to put on my iPod Touch? Could I mess up? 3. How does it feel? I'm aware it gives you a better grip? Does that mean it's sticky? 4. Do I really have lifetime warranty? Does that mean once my shield wears off they'll send me another one? 5. Not really having to do with Invisible Shield but, I've noticed two or three small pieces of lint that are within my iPod Screen...how do they get there and how do I get them out? Thanks!