Any that are not free.
No, you do not pay a monthly bill for iPod Touch apps.
No
Free apps are 100% free.
most apps are free, but u have to pay for some of them!
There are free apps, and as long as you get the apps that are supposed to be free for free, then it is legal. If you get the apps you are supposed to pay for free by jailbreaking the iPod Touch, it is illegal.
Any on the iTunes store that are under iPhone/iPod Touch, but you may have to pay for some.
gift card or credit card
You can install free text messaging apps, but you have to pay for minutes to call people on the iPod Touch.
Unless they're free.
anything on the app store. You have to pay for most of them.
Just Google Top iPod touch apps
You can store 144 apps on an Ipod touch.