In video sharing, anyone can be present with their videos and participate in others' videos. One presents oneself with a small part from one's privacy without having to step out of anonymity oneself. One is part of a large community within the vlogosphere, all of whom have the same interest: to see and be seen.
Within a very short time, video sharing has exploded and is dominated by a few video sharing portals. YouTube is the dominator, whose presence has been followed by many other video sharing portals. Metacafe, Zippyvideos, Bolt, DailyMotion and Grouper are just a few names of others.