13. The computer program product of claim 12 , wherein the interaction is associated with an interaction strength, the interaction strength describing a degree of association of the user and the video.
13. The computer program product of claim 12 , wherein the interaction is associated with an interaction strength, the interaction strength describing a degree of association of the user and the video. 17. The computer program product of claim 13 , wherein the interaction strength of the interaction is based on a frequency of the interaction.