How is Google Voice not VoIP? When one uses Google Voice one's voice is transmitted over an IP network, that seems to be the very definition of VoIP. Attempting to claim otherwise would seem to be to play semantic games.
I'm sorry, but you are mistaken. Your voice is not transmitted over an IP network with Google Voice. That's why it's not VoIP. There are no semantic games involved. Since I feel like I've beat this to death a few times before, I'll just point you to this: http://www.itworld.com/print/75774.
And yes the Wikipedia entry for Google Voice is mistaken. I should probably fix that for them...
