We've had a couple of questions concerning how to embed certain types of media into your posts, such as YouTube, Vimeo, Vine and the like. I think a big part of the problem is that we don't have a button for it in the editor. Also, some people fear change.
All you have to do to include a YouTube movie is paste the address of the YouTube vid into your post.
The forum pros usually employ the old Control-V paste keyboard shortcut. Right clicking the edit window brings up unhelpful table options.
The forum will automatically determine that this is a YouTube vid, and spit out the correct code to show it in your post.
This should also work for Vimeo, Instagram, Vine and Screenr.
REMEMBER KIDS, JUST PASTE THE LINK. IT SHOULD LOOK JUST LIKE ANY OTHER PIECE OF TEXT WHEN YOU'RE EDITING.