Free Browser gives you the opportunity to browse any disabled in the WiFi you are currently connected to.
In most cases these disabled sites are of course: FaceBook, MySpace, YouTube any many, many other Social-Networking websites.
There is no difference where you come from and what sites you'd like to access, using proxy you can omit the network settings and access anything you want.
It's all possible with using the anonymous proxy servers that modify the data you receive or send. As long as proxy servers are allowed to use in your company - in most cases there are - everything is again available for you.