User rated ★★★★★(beautiful feet)
Damn, this site needs a decent FAQ.
In the interest of not being an dick and someone had to tell me and you're only here since Sept 2015.
You cannot attach the shortened URL from You Tube, I also think you have to pull it from the playlist so it's a single video.
This leaves: https://www.youtube.com/watch?v=jDxbeJVOYK0
Add a new comment and in the upper right corner there will be a gray box that says Attach.. It's only there for the opening comment, not for replies. Your options are attach [nothing, a picture, a YouTube video]. For the picture, it has to be the Picture ID number from Wikifeet, nothing else. I already outlined the restrictions on You Tube. Try again and maybe someone with more privileges (and that's a mystery all on its own) might be able to remove this set of comments.