iMessage for ios5 or text me which you can buy in the app store
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!
I do not believe so. I tried using a headphones splitter with a mic, and just regular headphones. it did not work. also the mic just by itself didnt work. Although, you can listen to music on your ipod! i have a turtle beach x1 earforce, and 2g ipod touch. it might be different with other ipod/ headphone models! :D
Yeah. You can if you have wifi. You can use facetime skype and other voip services.
tell them everyone has it, it worked for me.
No you guys need an account and both of you need wi fi to talk to each other.
if you have to talk into it then you cant because an ipod doesnt have a microphone!
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
You can hold the home button and tell it to play a certain song. That's about it.