In my personal opinion I think it's a great idea to put up videos of people playing video games, and putting in their commentary. If you wanted a new game to play due to finishing the ones you already had, you could watch people play some for some ideas of what games to get. Or if you don't have enough money to get a certain game you could always watch someone play it.
Another reason I am with this is because if you're bored and have nothing to do (after finishing your homework of course (:) you could watch people put in their commentary on games while playing them. It's very interesting watching how other people react to video games. It's also really interesting watching how everyone's reaction to the game differs.