Absolutely 2g+ although if you don't have a 4g iPod Touch you need to get headphones with a built in mic to actually talk.
Yes but not to make the phone calls
Yes. Wifi is the only way that the iPod touch can transmit the voice data to the Textnow server to carry the call. With an iPhone, wifi is not required because it can also use the edge or 3G data connections.
I think textfree is the better one. I did use textnow, but the number they give you looks weird and doesn't have the right area code. Textplus gives you a texting adress, not a real phone number. Textfree gives you a number with your area code, and you can call people with it too.
Textfree is best.
no u can use any phone
You can use Skype and other VoIP (Voice-Over-IP) applications.
Wi-Fi is automatically set and used in the itouch. It doesn't need to be set up.
"Apple Store"
I would say the IPhone because the Itouch only has the ability for Wifi and apps and the basics. But the Ipone has Calling abilities and voice abilities where as the Iphone has no voice capability.
No, you can sell your iTouch 2G and purchuse a newer iTouch
Yes, all you need is wifi. Where your Itouch can get a solid connection.
no.