I'm curious if the new Skype video calling capability in their updated app works over SpeakOut, since apparently people can get 3G speeds on SpeakOut.
FaceTime only works over wi-fi, so this new Skype app video calling capability is an awesome step forward if it actually works.
I have a 2G iPhone so can't test it myself.
I do know that those with jailbroken iPhones can use an app called "3G Unrestrictor" from the Cydia repository that makes apps that only work over wi-fi and not data start working over data, but again can't try it out myself for stuff like FaceTime or Skype as I don't have a 3G phone.