Skyfire: Mobile Web Browsing over GFW

Just tried Skyfire on my Nokia E71 mobile phone. It is not only able to get over GFW but also able to play Youtube videos (E71 does not have a fully functional Flash player). A colleague told me that Skyfire renders Web pages (including embedded video) on the sever and sends result images to my mobile phone. It is really thin-client, but I will pay a lot for communication to network carrier.