it is called italk
Yes, you can chat off of your email. I am not sure how thinks like Google Talk and IM and stuff work though. But my friend who has a Gmail chatted off it with me all the time
You can text and even video chat if you have Skype. And yes you can call but it's illegal.
yes
The ipod touch 4g can video chat with an iphone 4 if you have a WiFi connection.
iPhone
You Cannot Chat in Ipod Touch or Iphone only in a Ipad
Why did they call it a iphone? tell me the answer please
YES
iPhones feature the FaceTime video chat application. (See links below)
Yes, you can call somebody from an iPhone 5.
Yes, if you turn off the chat feature on Facebook for your iPhone, it will appear as though you are offline.
chat can not work on the iphone because of how small the screen is. so when you try to chat with people it automatically sends them offline.