Ideally when someone watches the video, they will be able to leave their feedback by clicking on one of the emoticons prominently shown on the player.

When they press :thumbsup: (for example) this is recorded as when it happened.

This would ideally show on other players as well, so someone else watching would see that :thumbsup: was given at that specific point in time.

This would be useful for people watching the videos as it will allow them to express themselves.

This would also be useful for administrators to know what videos are providing what kind of feedback, and even know the possible points of interest within the video, allowing better video ads in future and reaction towards their customers.