Screen will be glossy

Involvement:Expert (understands the inner workings) - Ownership:1 week to 1 month

Protects the screen from scratches without adding bulk to the device

Will make the screen glossy and reflective

Order a couple in case you screw up the application, it can be a bit difficult to apply it evenly to the screen.

The fact that the screen is glossy makes this a useless product for me. E.g. you will get reflections if you use it in the sun, or if there is any light indoors. If you can deal with that, the product is fine.
Regardless, it's so cheap that it might be worth a try if you're afraid of getting scratches on the screen. I had a few since the screen scratches easily.