How to bypass blocked internet sites ?

You can Browse blocked sites using web proxys and proxy tools tools like UltraSurf. Web proxies are frequently used to gain access to web sites blocked by corporate or school proxies. Since they usually hide the user's own IP address from the web sites they access through the proxy. Most of the corporate and schools are blocked some sites like YouTube, Orkut , MySpace Etc..
Get the list of web proxy servers fromHttp://albin.1983.googlepages.com/webproxy

Features of UltraSurf 
1, 100% freedom to have 100% information in most secure way.
2, It means no matter where you are you can access 100% of internet I mean no firewalls no restriction nothing….
3. Almost all schools, universities and corporate offices raise firewalls to filter out not work related sites, now those firewalls will be of no use or they have to change their plans.
4. Everybody can access various social networks like Orkut, Youtube, Myspace, Hi5, Facebook, Linkedin etc. which are blocked almost in 99% schools and offices.
5. 100% real time and it’s encryption is better then any online banking system.