Mielr wrote: ...and so it begins:
What is the link to the video? is it actually down or are they making you aware that it may go down.
*EDIT*
Is this it? : http://www.youtube.com/watch?v=e1YbFnkZwZk
If that is it, then they are selectively targeting that video. as you're other SW related are still active. This smells shitty. The EFF.org's http://www.chillingeffects.org/ has a submittal form to log this complaint into a larger database. They also have tips on how to fight the take down and get the video returned.
*/EDIT*
If you want to be a pest, mention in the comments that the video has been tagged and your reaction. Then suggest that if people want the video to remain online they should re-upload a copy to Any service and post the link into the comments. If even 1-2 people every month repost it somewhere... anyway that's the pest response.