note- YouTube ***REQUIRES*** javascript be enabled to play videos.

If you, as I do, control your javascript at times to control pop-ups and such, you should enable it before trying to access YouTube, as the cookie YouTube sets in your browser cache will prevent you from enabling it after once going to YouTube and discovering it doesn't work.

   You would have to either: close your browser & re-open it OR clear the cache...then enable javascript before trying the link again.

I forget about once a week....and it took me several months to figure out why I could sometimes see videos & sometimes not.