FYI, if, for whatever reason, I remove a video, it's because of one of the below reason:
1) The video was old and irrelevant, thus a waste of bandwidth to leave up on Youtube. Google's already throwing ads to compensate for the bandwidth up everywhere, so I might as well be curtious and remove my useless videos if they're no longer relevant.
2) I'm sick of fanboys commenting on my videos when I do video responses to complete fools on Youtube. I'm right, they're wrong. Perhaps if these fanboys actually did a bit of research before commenting, they'd realize it. But, as far as I'm concerned, getting 10+ emails of crap on a daily basis just annoys me, so I remove the video.
3) I made either one or more factual errors within the video. So far I've removed one video for this, and that was due to a single error (though much of what I've said was true in the video).
If you see anyone saying that I removed a video response from one of their videos for any other reason, redirect them to this description, as this is absolutely no way I'd remove a video for whatever reason.