Watch Youtube with a better quality

This is a pretty simple trick. You just need to add
&fmt=18 in the url. So here's an example:

You go to Youtube.com and select some videos.
Example :
http://www.youtube.com/watch?v=f2b1D5w82yU

Now After this link put this little extension : &fmt=18

So the url now becomes like

http://www.youtube.com/watch?v=f2b1D5w82yU&fmt=18

And there you go.. A better quality. Very simple. Hope you like it. It can be done different way but its pretty simeple this way dont you think ?