Anoying advertising on Youtube

Using greasemonkey script is easy, you can find alot of script available in userscript.org you can go there and type youtube in the search box. pick one you need and install it. But you must have greasemonkey addon first in your firefox browser. and then go to youtube video and see what happen after you install the script. I hope this help http://userscripts.org/scripts/show/49366 remember you can install this script after attach greasemonkey to your browser. happy mylotting