Markofan, just click the youtube button when you post and paste the url in between youtube and /youtube. Also remember to remove the s after http. See below. I added a space before and after youtube so you can see the string and get the idea. You would not have these spaces when you post a video link.
[ youtube ]http://www.youtube.com/watch?v=oj4K9fr_WgY[ /youtube ]
Great rousing speech by Farage. He really is something. I am sure Trump loves this guy with his high energy! Wow!