Stealth Guards - Good Experience
I registered just to say something about this, and everyone out there with the "give it time, it's a wet install and it's different" opinion is pretty much dead-on in my experience.
I installed one of these on my wife's LG Rumor Touch several months ago (paid full price, even), and it worked perfectly. As stated by some others, any visible bubbles (which were VERY small, me being an AR perfectionist) disappeared after a few days. It's still on there great, and you can hardly tell it's there. The Rumor Touch has multiple pieces with various cutouts, so I'd assume it's far more difficult to apply than one for a Touch. Yeah, the wet install is a bit nerve-wracking at first, but it's hardly a big deal once you realize that no harm is going to be done. And it's way more forgiving than adhesive protector installs I've done on DSs or other phones.
That said, I just bit the bullet and preordered a new 4th gen Touch, and immediately went out and got two Stealth Guards for it (yes, they have 4th gen guards up on the site now) for a total of $4.85 shipping.
The only concern I have is how it could affect the touch screen. On the Rumor, it works fine, generally, but it's hard to tell if it'll feel "off" with games and such on the Touch. Hopefully not---I'm thinking the touch responsiveness on the Rumor's screen is simply because it's a Rumor (hardly an iPod). I'll try to update once I have everything, but right now, the iPod and the guards are on order, so I'll have to wait until both are released.
Long story short, these guards are legit. The "healing" claim is a bit silly, based on fingernail tests I've done on the Rumor, but it's still superior to a lot of cheaper screen protectors I've seen. Just don't expect a miracle.