I had setup Google Voice w/ voicemail on my old Droid. And was a little bit dismayed to find it wouldn't allow me to use GV Voicemail when I setup GV on my Optimus V on VM. And everywhere I looked online it said GV Voicemail wasn't supported by VM. But I saw the normal GV Voicemail actually worked sometimes.... If you have under accessibility -> power button ends call (an option I loved with my droid), and you press the ridiculously touchy power button it will go to Virgin Mobile Voicemail. I was expecting an important call and I sent the person to VM 3 times in a row with that power button setting enabled, even though I was trying not to touch it with the phone in my pocket. With the fully supported GV voicemail on Verizon it would just silence the ringer, allowing you to actually pickup the call. Maybe it was something different setup in the hacked rom I was using I don't know. If you Reject the call using the onscreen slider it will go to Virgin Mobile Voicemail. However you press the volume toggle to silence the call's ringer like I need to at work, even before I decide whether I want to take the call, or just leave the phone ring it will always go to Google voice.