If you have ever wanted to have a youtube video play repeatedly but don't want to click the play button each time the video ends, there is a simple tip, just add the word 'repeater' between 'youtube' and '.com' and here is how:
Find the video you like on YouTube

Press Enter (on your keyboard) or Go (in your browser)and the video will play repeatedly in a loop

For example: www.youtube.com/watch?v=2syi...
becomes:  www.youtuberepeater.com/watch?v=2syi...   

or: uk.youtube.com/watch?v=m6SDM...
becomes:  uk.youtuberepeater.com/watch?v=m6SDM...

This hack also works works on embedded video links. If country links eg. those ending with .uk, .jp .hk etc. don't work, try adding the prefix www after the http://