I can only go by my experience with contacting the company and asking about Vippie and them not answering but instead using my e-mail address to start spamming me with advertisements for their high end VoipSwitch program.
This type of business practice of not actually answering e-mail questions is bad but then using the e-mail address that was used to ask the question to spam with advertisements for their higher end program is a fail in my opinion.
In my e-mail to them, I pointed out that I was not interested in VoipSwitch since I was a CONSUMER and my question was regarding Vippie. I asked the question again and got the same advertisement spamming for VoipSwitch.