If you listen to this interview by Techzing with th creators of a "web tv show" Pioneer One, they talk about how releasing it on Bittorrent has given them access to many new people and new lead gen.
(Also I note they mention in it in the blurb) http://techzinglive.com/page/643/102-tz-interview-pioneer-on...
Assuming Khan do a "nice bit of self branding" at the start or end of the video with the link, then I can only see this being a plus, it also keeps the videos more in the public domain, instead on youtube, for instance... I believe ultimately it will bring them more exposure.