Does FaceTime take up data or calling minutes when in a Wi-Fi area? I am using FaceTime and calling my friend abroad. I am using an iPod touch, but my friend has an iPhone and is in an area where they have Wi-Fi access.  My question is, does that "call" count toward data or voice minutes, or is it unlimited and free as it's all going over Wi-Fi?
According to Apple Support:


  Check that each person has an active Wi-Fi connection.


Since both parties must use Wi-fi, no cellular data or voice usage will be charged.

More information can be found in this Apple.SE post, as it may be possible to use Facetime over 3G if the phone is jailbroken.