[flash]http://does have some functionality. The old way of doing youtube videos no-longer works (the link is now dead). Youtube now have a different embedded link
Before: https://www.youtube.com/v/ST2H8FWDvEA[flash]
Now:%20https://www.youtube.com/embed/ST2H8FWDvEA
[flash=300,300]https://www.youtube.com/embed/ST2H8FWDvEA
Flash player doesnt work with them though.