The first follower transforms a lone nut into a leader.
https://www.youtube-nocookie.com/embed/V74AxCqOTvg?rel=0&start=15&end=190
HEIGHT 250
Derek Sivers: How to Start a Movement—TED 2010 (3 min) youtube 
See Create a Wake
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Commentary on the use of the frame plugin.
In 2019-09-21, Firefox refused to load the youtube embedded player with a security warning. Google Chrome permited the player.
I chose a frame plugin instead of video plugin to control start and stop times of the embedded video. In this case, the content of the short TED video is followed by an advertisement. I prefer to keep my wiki ad-free and so have configured the embedded video to stop before playing that ad.