The way I remember, there were services of sharing bookmarks, than came Yahoo briefcase, pictures, than came “share your OPML”, than came Flickr and other related services and now one can share their video clips too. There is a new service called Vimeo where you can share your video clips. This is still in closed beta, but one day will be available to public. So let’s see if Vimeo will be good enough to be acquired by a big company like Flickr did.