On this website, don't paste any links but click on the Youtube Icon.
Then when it takes you to youtbe, past the video link after "="
You can also try these methods:
YouTube uses your computer IP address to determine your physical location / country. In order to bypass these country-specific restrictions on YouTube, try this trick:
If the URL of the YouTube video is http://www.youtube.com/watch?v=yEwD36Dk1jw - just replace the /watch?v= part with /v so your new URL becomes http://www.youtube.com/v/yEwD36Dk1jw
The other trick is that you type the YouTube video URL inside Google Translate and use this a free Google Proxy Server. Read some more ways to access blocked websites.