i use this site to download youtube videos, before i came across that site it was SO SO difficult to download youtube videos. you had to install some software (2 different ones) then download the video. after that you then had to use video converting software to change the format.
Now with that site you simply give them the link and the format you want to convert to, give them your email address and you will get a download link.
So i thought id share it with everyone here because i know many people have this problem. And because youtube want people to visit their website to watch the video instead of downloading it they have made it extremely difficult.