Predicting Knowledge Gaps of Media Consumers

A method comprising using at least one hardware processor for receiving a request of a user for media, retrieving a first metadata set relating to said media, comparing between: (a) a media usage profile of the user, which profile reflects knowledge of the user, and (b) the first metadata set relating to said media, to identify gaps in the knowledge of the user with respect to said media, and providing to the user information relating to said identified gaps.