I vehemently disagree with screen protectors being a necessity. They are a bonus in some use cases, and IF you're doing something like working construction or whatever, where you KNOW things are going to be scratching against your N900 due to sheer statistical likelihood, then a screen protector is a wonderful thing to have. But I've had my N900 without a screen protector since the day I got it, and no scratches (the only areas that are slightly scratched have nothing to do with screen protectors, and the Zagg Invisible Shield 'full body' protection doesn't cover those parts anyway, and I only got those scratches from dropping my N900 from waist height on concrete. It's taken harder drops without a mark so long as the surface wasn't serrated like concrete is). I use a belt clipping-on holster to carry it (and before that, I always reserved a pocket for it, so it was alone without anything else in there). I just cleaned my screen, looked it over - in the 7 or so months I've had the N900, there's maybe 3-4 scratches that are visible without REALLY bright light used to make them visible. With bright light, you can see indications of little minute scratches, yes, but I literally have to have the screen off, and turn on a lamp right over the screen to see them, or go out on a clear sunny day. If the screen is on, you simply can't see them. And none of them are even remotely 'feel'-able to the touch. So unless your ability to enjoy a device is inherently linked to not being able to see any scratch lines what-so-ever under completely not-realistic use-cases (where "use" means inspecting the screen for scratches, not actually using the device for anything it does), I say a screen protector isn't necessary. But if you personally want one, I recommend paying for a Zagg Invisible Shield one (not necessarily full-body, just a screen works too). They are indeed the best I know of.