From A Neighborhood in Transition
How to add a YouTube video to the wiki
Use the youtube tag and the file name of the video, like this:
<youtube>FileNameOfYouTubeVideo</youtube>
For example, If the web address of the YouTube video you want to add is: http://www.youtube.com/watch?v=xuD9HQr4cAw
Then you just copy or type the last part of the address in between the youtube tags like this:
<youtube>xuD9HQr4cAw</youtube>
Here's the result: