Another day, another prize — and so it goes here at JAMM until we run out of things to give away. Today’s prize is something I am particularly psyched about because I use it every day. Riddle me this: what’s invisible, shields, and is made of polyurethane?

Oh, you’re so clever! Of course it’s ZAGG’s InvisibleShield, and the following folks are going to be getting one each (for any device): DarkCorner, fireman54, and James.

Congrats! You won’t really see the shield protecting your device, but rest assured it will be nigh invulnerable to scratches. I’m using one on my PSP Slim and on my iPhone 2G right now, and I simply love having the extra protection. So keep an eye out for the e-mail we’ll be sending you soon.

For the rest of you: JOIN CONTEST HERE!