The only thing that Google Voice seems to do that Vonage doesn't is filter your incoming calls based on rules. That would be handy, but not the "killer app". H

The only thing that Google Voice seems to do that Vonage doesn't is filter your incoming calls based on rules. That would be handy, but not the "killer app". Hmm, I think this may indeed turn out to be a killer app. Guess we'll find out soon enough.