SELECTING CONTENT AND IDENTIFYING USERS FOR IDENTIFICATION TO ADDITIONAL USERS OF A SOCIAL NETWORKING SYSTEM BASED ON USER ATTRIBUTES OR CONTENT ITEM CHARACTERISTICS

A social networking system provides a user with a feed of content items associated with other users connected to the user via the social networking system. Additionally, the social networking system identifies additional content items for presentation to the user and generates an additional feed including the additional content items. The additional content items may be determined by identifying content items having various characteristics and scoring the content items based on the characteristics. Content items having at least a threshold score are identified as additional content items. Examples of characteristics of content items include users providing content items to the social networking system, locations associated with social networking system users, and interaction with content items by social networking system users. In some embodiments, the additional feed modifies presentation of the additional content items based on their associated scores.