Recommending Content Items in a Social Network Using Delayed Interaction

When a user sees a content item presented by a social networking system, the user may select an option to save the content item. When a user saves a content item, views saved content items, or otherwise indicates a present interest in a particular saved content item, the system recommends one or more additional items for the users to consume or save based on the seed saved content item. To find the additional content items, the system identifies other users who also saved the seed item and then finds other content items that these other users also saved at a rate that is disproportionately higher than the global save rates for the content items (which may be normalized by opportunities to save the content). Relevance for content items in other contexts may also be determined based on content items that have been saved by a user.