Since YouTube changed its code, and no longer supports the embed method we used to use, I added a new tag to the site to support the iframe tag. I know Adrian initially didn't want to add iframe, but I know people like embedding videos.
So, to use this:
1. Click Share.
2. Click Embed.
3. In the drop down menu, select the width of the video you want. If you are posting your own journal, the maximum width for a video is 500. If you are adding a video to a comment, scale it down under 500. Type your value in the first box. The second box will auto-populate with the proper aspect ratio.
4. Copy and paste the code above that onto Oasis.
iFrame is a bit wonky, IMHO. You may have to reload a page if the video doesn't appear. But this is the new YouTube code they want, so we're stuck with it.