Google Voice does conference calling[1], I'd hope you can invoke it in the same way from Gmail if they call your GVoice number. [1] http://www.google.com/suppo

Google Voice does conference calling[1], I'd hope you can invoke it in the same way from Gmail if they call your GVoice number. [1] http://www.google.com/support/voice/bin/answer.py?hl=en&answer=115137 http://www.google.com/support/voice/bin/answer.py?hl=en&...