I am really have a difficult time understanding this service. I just got an invite finally and have it all set up. However I am confused regarding the text messaging. At the moment I have texts and voicemails coming to my phone as google voice notifications. Now, my question is are these incoming texts free? And if I reply using the google voice sms app are these outgoing messages free? All I could find online is that if you have messages come via your email they were free, but then what is the point of the google voice app?