Easiest way to download youtube videos

I always wanted to download youtube videos and I used softwares and some sites with which I ws not too satisfied by those downloaded videos. They were small in length but they were of bad quality. those I wanted to download good quality videos and in other format other than .flv, So I found this web-site "KEEP-TUBE.COM" which provides youtube video downloads in HD format (High Definition) and we could either download flv format or mp4 format. Its a very good site according to me.

This site provides the best and easiest way to download youtube videos. That is you need to type as " keep- " before " youtube " in your video link which you want to download from youtube and hit enter to open its download link.
for example suppose your link is " http://www.youtube.com/watch?v=ulIx-8KiH0A " then you need to modify it as " http://www.keep-youtube.com/watch?v=ulIx-8KiH0A " and hit GO. and your video is ready to download, just click on the download with format.

Note that if your youtube video is in HD format then you will get an option to download your video in HD format. There are many sites were you can download videos from youtube but this is good one. Just try it and post your comments.

Update:

Now a days some are facing some problem with downloading videos with this site. So I got another way to download youtube videos, But you need mozilla firefox browser for this.

Mozilla firefox browser is most widely used browser and very secure browser too. so download and install this browser through www.firefox.com (Its absolutely free of cost). Since firefox enables many of the addon's to install in it and use for various activities, you need a addon called "DownloadHelper". Install this addon and you are on.

You get a molecule kind of picture near the address bar or on status bar in your firefox browser. when ever you open your youtube video which you want to download, the picture starts animating (which means you can download the video) just click on the animating picture and it'll ask you for download of that video. Thats it!!

DownloadHelper also supports others sites from which you can download videos you can check the list in it and it also supports for other files other than videos also. Try It and plz do comment