Can you Text on an iPod Touch?

Although via the actual iTouch itself you can't-- because it's not a phone-- there are certain apps you can download that will allow you to text. Some are paid apps while others are free and all range in quality. But they will let you text regular numbers and other iTouch users as well-- via their own network. Just make sure you always have WiFi and you'll be able to text on your iTouch! Just search 'texting' in the App Store :)

I can do FREE texting to my son's ipod touch and his girfriend's phone through 'text now' appt.

There's an app for that! On one app, you also get 10 minutes of phone time free (but ONLY ten minutes!)

Nope, its only a music player not a phone so you can't text