Creative Phone Service - And Creative Billing

I just discovered a new phone service called Tabrio .  It claims to provide Skype -like calling rates (ad-supported), without the need for any special headsets or hardware.  In fact, this service runs through your existing phone provider - landline and/or mobile.  You give Tabrio your callback phone number (via their downloadable application).  When you make a call, it first calls you and then it calls the other party.  Clever. What I like about this model is that it does not rely on my internet bandwidth like Vonage and Skype. I’ve had problems with sound quality on both of these services in the past. So far, Tabrio sounds great.  I call England a fair amount and also send text messages there.  The Tabrio site claims that the sms rate from the UK to the UK is $.04.  I received $5 of free service to try it out. On the first day I did some test runs. I made one local call, one domestic text and one international text. According to the websit...