Vimeo is in same issue as YouTube. Internet Archive seems to be in same issue too, unfortunately.
MediaGoblin is, in fact, a software that one installs on a computer, so that computer can act like a website to publish/share video, image, text, audio, and some other things. But there is no need for everyone to do it, because it also accepts accounts (for example, a friend of yours successfully sets-up a MediaGoblin instance, then you can go there and create an account). However, they are still working on federation of MediaGoblin, because currently, each instance is really separated, you can't communicate with your friend at "B" using your account from "A".
