hack youtube videos & download...!!!!

friends today I will explin you how to download youtube videos in simple step without any software.1. Go to www.youtube.com2. select the video that you want to download.if I want to download the videos of the below url(fig 1)ex: http://in.youtube.com/watch/?v=PZbG9i1oGPA3. just add "kick" word to the url(fig2) ex: http://in.kickyoutube.com/watch/?v=