Yes you can... i have them.. they work awesome.. i would suggest the app.. TruPhone.. its free.. and great you can connect with Skype, Aim, Google Talk, etc. Landlines, Mobiles, etc; are very low priced... if you don't want to buy a phone. You can also use them for like calling Skype if you get the free app at the iTunes App store. They are very great products.. you get the ones cheap by apple for $25 at Walmart and Target.
<I recommend this to all users of iPod Touches.>
Yes you can talk on the iPod Touch by using this special phone app you can go to the safari app and look for iPhone icons and get the phone app and you'll see a phone app icon on a white page drag the app until it reaches the top of the screen the press the plus button then there's a sign that says "add to home page" click on it an you should drag it to the bottom left corner where the safari app is or any other app and your'e all set.
Or you could go to the app store and get the phone app there
no thats called an iphone :)
No the ipod is just an ipod you cannot use it as a phone.
Go to http://www.google.com/talk on safari on your ipod touch. :D Enjoy!
tell them everyone has it, it worked for me.
if you have to talk into it then you cant because an ipod doesnt have a microphone!
iMessage for ios5 or text me which you can buy in the app store
As far as i know you can only talk if you plug in a microphone. I hope that answered your question! 
There are apps that allow you to dial phone numbers
You can talk to him over instagram for iPhone and iPod touch or twitter or Facebook
Well, because it is an iPod, and it has a touch screen.
You can hold the home button and tell it to play a certain song. That's about it.
You cannot text another iPod Touch with your iPod Touch. The iPod Touch can only go to phones.