We already have an in-game screenshot button. But, one day, I think SE should implement an in-game video recorder too. This feature can be for people who can't run FRAPS or any other recorder very effectively.
Some games have video recorders which record the game's graphical data so it can be replayed using the game engine at a later date for your viewing pleasure. This way, players can record videos very easily and without their performance taking a big hit. It also preserves the quality of the graphics.
More player-videos circulating can only be a good thing right?