dont worry if orkut or youtube is blocked in your office or college.unlock it easily
1. just use the proxy servers hope so the proxy servers are not banned.

2. the one of the proxy is "www.orkutpass.com".

3. go through it and enter the any site name in the URL on the site.Another proxy servers
www.antionline.com
www.kproxy.com
www.hideyourass.com