I've been using GVMobile this whole time with the assumption that all calls placed through it are free. It's a hassle to use because the contact list is different, and you have to wait for an incoming call to connect you, but I thought I was saving money so I dealt. Turns out I was completely wrong! ATT charges you just as much for incoming calls as outgoing, so I've been wasting my time! That was the main reason I jailbroke my phone too! Now that GVMobile is useless to me, the ONLY reason I have my phone JB'd is for tethering, which I rarely even use. I'm considering going home tonight and restoring my phone to legit 3.1.3 because I have a new 3GS so it's a tethered JB anyway (which is a huge annoyance if my phone restarts when I'm not anywhere near my MacBook). My mind has been blown this morning. Shiv.