Abstract: In particular embodiments a social networking system captures data associated with video content provided to a first user of a social-networking system, identifies, using the captured data, the video content provided to the first user, and updates a graph of the social-networking system to associate the first user with the identified video content. The graph of the social-networking system has a plurality of nodes and edges connecting the nodes. The nodes of the graph include user nodes that are each associated with a particular user of the social-networking system.

Abstract: In particular embodiments, one or more computer systems of a social-networking system determine identities of one or more users in proximity to a display device and query a social graph of the social-networking system for social content associated with the determined identities. The social graph includes nodes and edges connecting the nodes. The nodes include user nodes that are each associated with a particular user of the social-networking system. The one or more computer systems of the social-networking system identify, using the social content, recommended media content for the one or more users in proximity to the display device and provide a playlist for display on the display device. The playlist includes the recommended media content for the one or more users in proximity to the display device.

Abstract: A time a user of a client application is likely to access a preferred network connection is predicted. A pre-download index for one or more multimedia content items is calculated, where the pre-download index represents how likely the user is to interact with the one or more multimedia content items at approximately the predicted time. The indexed multimedia content items are ranked based on the pre-download index of each of the one or more multimedia content items. The ranked multimedia content items are provided to the client application at the predicted time.

Abstract: A map interface presents a geographic map with markers identifying geographic locations associated with content items. When the geographic distance between two or more content items is less than a threshold distance, multiple content items are grouped to create an aggregated content item. Based on the geographic locations associated with the grouped content items, a geographic location is associated with the aggregated content item. A single marker identifies the geographic location for the aggregated content item on the geographic map. When a user viewing the map interface accesses the single marker, content selected from the content items combined to generated the aggregated content item is presented as well as the geographic location associated with the aggregated content item.

Abstract: Techniques for substituting references to content shared within the social networking system. In an embodiment, a first reference to a first version of content is received. A second version of the content is selected based on at least one optimization objective. A second reference to the second version of the content is created for provision to a user of a social networking system. The second reference is provided for the user. The at least one optimization objective includes at least one of a business objective, a technical objective, and a legal objective. The content may include at least one of video and audio.

Abstract: In particular embodiments a social networking system captures data associated with video content provided to a first user of a social-networking system, identifies, using the captured data, the video content provided to the first user, and updates a graph of the social-networking system to associate the first user with the identified video content. The graph of the social-networking system has a plurality of nodes and edges connecting the nodes. The nodes of the graph include user nodes that are each associated with a particular user of the social-networking system.

Abstract: In particular embodiments, one or more computer systems of a social-networking system determine identities of one or more users in proximity to a display device and query a social graph of the social-networking system for social content associated with the determined identities. The social graph includes nodes and edges connecting the nodes. The nodes include user nodes that are each associated with a particular user of the social-networking system. The one or more computer systems of the social-networking system identify, using the social content, recommended media content for the one or more users in proximity to the display device and provide a playlist for display on the display device. The playlist includes the recommended media content for the one or more users in proximity to the display device.

Abstract: Social networking system users may create events where a group of other users invited to the event meet at a specified time and location. While an inviting user initially specifies the group of users to invite to the event, the social networking system suggests additional users to invite to the event. The social networking system suggests additional users based on a prediction that the users would attend the event if invited. Various factors may be used to make the prediction, such as an affinity between the inviting user and the other users, the availability of the other users at the time of the event and/or the proximity of the other users to the location of the event. Invitations to the suggested additional users may be automatically sent or sent to a set of the additional users selected by the inviting user.

Abstract: Techniques for substituting references to content shared within the social networking system. In an embodiment, a first reference to a first version of content is received. A second version of the content is selected based on at least one optimization objective. A second reference to the second version of the content is created for provision to a user of a social networking system. The second reference is provided for the user. The at least one optimization objective includes at least one of a business objective, a technical objective, and a legal objective. The content may include at least one of video and audio.

Abstract: Social networking system users may create events where a group of other users invited to the event meet at a specified time and location. While an inviting user initially specifies the group of users to invite to the event, the social networking system suggests additional users to invite to the event. The social networking system suggests additional users based on a prediction that the users would attend the event if invited. Various factors may be used to make the prediction, such as an affinity between the inviting user and the other users, the availability of the other users at the time of the event and/or the proximity of the other users to the location of the event. Invitations to the suggested additional users may be automatically sent or sent to a set of the additional users selected by the inviting user.

Abstract: A social networking system presents questions to a user on an interface associated with the social networking system to elicit information about the user that is missing from the user's profile or is otherwise outdated. The questions are selected based on a number of factors, such as the need for or value of the information item, probability of a response, or cost of collecting the information item. In presenting the selected question, the social networking system prompts a user for information about the user in a an interface associated with a page from the social networking system, an application external to the social networking system, or using a push notification or prompt. The questions may be formatted in various ways, such as an explicit question, confirmation, a selection of responses, or social context to encourage the user to respond to the question.

Abstract: In particular embodiments, one or more computer systems of a social-networking system identify a user viewing video content on a first display device, identify the video content being viewed on the first display device by the user, and determine a second display device associated with the identified user. The one or more computer systems of the social-networking system determine an action related to the video content being viewed by the user on the first display device and provide one or more instructions to the determined second display device to display a call-to-action associated with the determined action.

Abstract: A map interface presents a geographic map with markers identifying geographic locations associated with content items. When the geographic distance between two or more content items is less than a threshold distance, multiple content items are grouped to create an aggregated content item. Based on the geographic locations associated with the grouped content items, a geographic location is associated with the aggregated content item. A single marker identifies the geographic location for the aggregated content item on the geographic map. When a user viewing the map interface accesses the single marker, content selected from the content items combined to generated the aggregated content item is presented as well as the geographic location associated with the aggregated content item.

Abstract: Techniques for substituting references to content shared within the social networking system. In an embodiment, a first reference to a first version of content is received. A second version of the content is selected based on at least one optimization objective. A second reference to the second version of the content is created for provision to a user of a social networking system. The second reference is provided for the user. The at least one optimization objective includes at least one of a business objective, a technical objective, and a legal objective. The content may include at least one of video and audio.

Abstract: In particular embodiments, one or more computer systems of a social-networking system identify a user viewing video content on a first display device, identify the video content being viewed on the first display device by the user, and determine a second display device associated with the identified user. The one or more computer systems of the social-networking system determine an action related to the video content being viewed by the user on the first display device and provide one or more instructions to the determined second display device to display a call-to-action associated with the determined action.

Abstract: A social networking system presents questions to a user on an interface associated with the social networking system to elicit information about the user that is missing from the user's profile or is otherwise outdated. The questions are selected based on a number of factors, such as the need for or value of the information item, probability of a response, or cost of collecting the information item. In presenting the selected question, the social networking system prompts a user for information about the user in a an interface associated with a page from the social networking system, an application external to the social networking system, or using a push notification or prompt. The questions may be formatted in various ways, such as an explicit question, confirmation, a selection of responses, or social context to encourage the user to respond to the question.

Abstract: A social networking system obtains specific structured data about a user via a composer interface having textual content with incomplete portions and input fields corresponding to the incomplete portions. The input fields map to data fields in the user's profile and are selected based on the social networking system's need for the information associated with the data fields.

Abstract: A social networking system identifies an event based on a thread including messages from users of the social networking system and communicates invitations to the event to one or more invited users. The social networking system receives a response to an invitation from a responding user and identifies a group of users invited to the event that have not responded to the invitation. From the users invited to the event that have not responded to the invitation, a subset of users having a threshold affinity to the responding user are selected. The social networking system notifies the subset of users of the responding user's response to the invitation and may also provide the subset of users with a suggestion for attending the event.

Abstract: A social networking system obtains specific structured data about a user via a composer interface having textual content with incomplete portions and input fields corresponding to the incomplete potions. The input fields map to data fields in the user's profile and are selected based on the social networking system's need for the information associated with the data fields.

Abstract: In one embodiment, one or more computing devices receive, from one or more mobile devices respectively associated with one or more users, one or more sets of data, wherein each set of data comprises: a user identifier indicating to which user the set of data corresponds; a location where the corresponding user was at; and a time when the corresponding user was at the location. The computing devices store the one or more sets of data; and extract one or more statistics from the one or more sets of data that represent behavioral pattern of at least one of the one or more users.