How Smudgy Does An Ipod Touch Screen Get?

I’m going to get an ipod touch, and one thing that’s been bugging me is how smudgy the screen will get, and how noticeable it is
or does it even get smudgy?

I know it is so silly of me to ask as this wonderful touch screen phenominal phone is so great but why does everybody think same thing, the new iPhone is going to have a touch screen. I know its been a great idea but people have made so many complaints that they cant work it because of the touch screen, Apple want to please its customers, so rid of it, not that I want it gone. I love it!

my iPod touch screen has a lot of scratches on it. how much would it be to get it replaced, and how long would it take?

I’m working for an educational organization and want to add a touch screen monitor for some purpose. My question is whether adding only a such monitor to the computer will be enough or any special software working behind required? Or in other words, does a touch screen monitor work similar to a normal monitor i.e. just a power cable and a data cable and done with?

For my previous request to ask how to remove scratches from a touch screen display on a mobile phone a request was to put a protective cover on it.
How does that help remove the scratches?

I was looking at videos of the LG Vu and it seemed as if the touch screen had some problems. The LG Vu hasn’t been released yet, so if you have any advise on wether or not to buy a LG phone that has touch screen(like the venus or the voyager), it would be much appreciated. My main concern is if the touch screen is responsive enough and if is easy to use.