Abstract: A social networking system user may associate a graphical element representing the user's emotional reaction with a content item presented by the social networking system. The user is presented with one or more graphical elements maintained by the social networking system and selects a graphical element for associating with the content item. If certain graphical elements are selected, the social networking system prompts the user for compensation or requests compensation from an entity associated with the selected graphical element. The selected graphical element is associated with the content item and a connection, or other information, between the user and the object identifying the selected graphical element is stored by the social networking system. The selected graphical element may be displayed with the content item to the user and to other users connected to the user.

Abstract: A social networking system user may associate a graphical element representing the user's emotional reaction with a content item presented by the social networking system. The user is presented with one or more graphical elements maintained by the social networking system and selects a graphical element for associating with the content item. If certain graphical elements are selected, the social networking system prompts the user for compensation or requests compensation from an entity associated with the selected graphical element. The selected graphical element is associated with the content item and a connection, or other information, between the user and the object identifying the selected graphical element is stored by the social networking system. The selected graphical element may be displayed with the content item to the user and to other users connected to the user.

Abstract: Systems, methods, and non-transitory computer-readable media can select a first sample set comprising one or more data elements from a dataset based on a first priority score ranking at a first time for a first analysis. A second sample set comprising one or more data elements from the dataset is selected based on a second priority score ranking at a second time for a second analysis. An evaluation subset of one or more data elements from the second sample set is determined based on a comparison of the first sample set and the second sample set. The data elements in the second sample set that are not included in the evaluation subset are not analyzed ni the second analysis.

Abstract: A social networking system user may associate a graphical element representing the user's emotional reaction with a content item presented by the social networking system. The user is presented with one or more graphical elements maintained by the social networking system and selects a graphical element for associating with the content item. If certain graphical elements are selected, the social networking system prompts the user for compensation or requests compensation from an entity associated with the selected graphical element. The selected graphical element is associated with the content item and a connection, or other information, between the user and the object identifying the selected graphical element is stored by the social networking system. The selected graphical element may be displayed with the content item to the user and to other users connected to the user.

Abstract: A social networking system user may associate an emoji representing the user's emotional reaction with a content item presented by the social networking system. The user is presented with one or more emoji maintained by the social networking system and selects an emoji for associating with the content item. If certain emoji are selected, the social networking system prompts the user for compensation or requests compensation from an entity associated with the selected emoji. The selected emoji is associated with the content item and a connection, or other information, between the user and the object identifying the selected emoji is stored by the social networking system. The selected emoji may be displayed with the content item to the user and to other users connected to the user.

Abstract: A social networking system provides stories about objects in the social networking system to a viewing user. To increase the likelihood that a story will also be provided to other users, the social networking system allows the viewing user to promote the story. When a user promotes a story, the social networking system may monitor the effectiveness of the promotion. For example, the social networking system generates a ghost story corresponding to a promoted story and not associated with promotion information. When a promoted story is selected to be provided to a user, the social networking system determines whether the ghost story would have been selected to be provided to the user. If the ghost story would have been selected, the social networking system determines the promotion did not affect selection of the promoted story.

Abstract: A social networking system user may associate an emoji representing the user's emotional reaction with a content item presented by the social networking system. The user is presented with one or more emoji maintained by the social networking system and selects an emoji for associating with the content item. If certain emoji are selected, the social networking system prompts the user for compensation or requests compensation from an entity associated with the selected emoji. The selected emoji is associated with the content item and a connection, or other information, between the user and the object identifying the selected emoji is stored by the social networking system. The selected emoji may be displayed with the content item to the user and to other users connected to the user.

Abstract: One variation of a method includes: receiving a transaction request, the transaction request comprising an identity of a user, a location of a vendor, and a price of a transaction; identifying a set of payment methods available to the user, a particular payment method in the set of payment methods characterized by a discrete payment structure defining a discrete payment increment; ranking the available payment methods according to a preferred payment method associated with the location of the vendor, according to the discrete payment structure of the particular payment method, and according to the price of the transaction; receiving a selection from the user for the particular payment method for the transaction; and authorizing a payment to the vendor with the particular payment method.