To download any video on Youtube without any software or plugin, just add this at the begin (after www) of the link: kick. Somewhat like this;
This is normal youtube link, you must add kick after www
When kickyoutube site appear choose video format (supports FLV, MP4, AVI, WMV, 3GP, IPHONE, PSP, 3GP, MP3, OGG and GIF) and click GO button.
