The free version is supposedly sponsored by ads but i installed it to test if it would allow me to access geo-locked US websites and not been shown any ads yet. It did work with some sites that are blocked from outside the US but some still came up saying 'this content is not available outside the US' which suggests they use other techniques to identify your location other than your IP.
It seems reasonably quick as well, no noticeable speed difference in general surfing over my standard ADSL2 connection. I did try to see if you could get around having to buy premium for the desktop version by trying to create a wireless hotspot on my phone while the VPN app was connected and then connecting to that from my PC, but that didn't work as although the phones browser went through the VPN the desktop session via the hotspot bypassed it and connected directly. Maybe spoofing the browser or using a proxy server app on the phone could allow you to do it but haven't tried that.
Biting the hand that feeds IT
