1. copy link url download di youtube
2. paste link tersebut di http://www.downloadyoutubevideos.com/
3. paste di field downloadnya di http://www.downloadyoutubevideos.com/, di kolom download
4.klik download

dijamin g bakal bayar alias gretongan ...
hehehe....
semoga bermanfaat ....

referensi :
http://www.keepvid.com/
http://javimoya.com/