27. The system according to claim 18 , further comprising: an analytics module for monitoring user's activity during presentation of content, collecting monitored user's activity data and user's feedback through the user device on the effectiveness of a presented content type, presentation type and format and updating the user content interests on the memory of the server computer based on the activity data and the feedback collected.
27. The system according to claim 18 , further comprising: an analytics module for monitoring user's activity during presentation of content, collecting monitored user's activity data and user's feedback through the user device on the effectiveness of a presented content type, presentation type and format and updating the user content interests on the memory of the server computer based on the activity data and the feedback collected. 29. The system according to claim 27 , wherein the user's feedback comprises at least one selected from the group consisting of: user rating, answers for questions on content type, presentation type and formats.