So I went and made my own Youtube channel. I intend to populate it with mostly videos of old Mac games, at least the ones I liked. I might also throw in a Linux screencast. I've been meaning to do something like that for ages, so at my current pace I'll get around to it sometime in the next calendar year (don't hold me to it). Also, it looks like Youtube implemented their new comment policy just in time, so all of you who want to call me a booger snot will have to do it from your public Google+ profile :-P
Incidentally, did you know MPEG Steamclip is still around? I needed to edit some of these videos, which were .mov files with an odd audio codec, and Avidemux wouldn't play along. So I remembered MPEG Streamclip which I used a long time ago and went over to their site and saw they had an update from last year. Still runs on Jaguar (!). It's still as easy as ever to use and did exactly what I needed.
One last tidbit, if you upload a 640x480 video to Youtube in H.264 format, it will be horribly distorted when Youtube downscales it to 360p. If you upload as MPEG-4, you won't have that problem.