A buddy uses Talkatone in conjunction with Google Voice on his iPhone to make and receive free phone calls over wifi. I loaded the Android version on my GB Vtab last night and had a lot of problems. I could call out and connect but could not be heard (with "speaker" function pressed - didn't try a headset yet). Also, once I dialed out and the line was "ringing", I could not disconnect, exit, or kill Talkatone in any manner, even with ES Task Mgr. If the call connected and the other end hung up, Talkatone would disconnect otherwise it would keep on ringing until I bounced the tablet. Anyone successfully using this app on the vtab?