Abstract: Systems, methods, and non-transitory computer-readable media can determine at least one content item to be categorized, wherein the content item relates to a topic. The topic related to the content item can be determined. A set of categories can be determined based at least in part on the topic. A determination can be made that the content item corresponds to a first category in the set of categories. The content item can be associated with the first category, wherein the content item is included in a page corresponding to the topic within the first category.

Abstract: Systems, methods, and non-transitory computer-readable media can determine at least one content item to be categorized, wherein the content item relates to a topic. The topic related to the content item can be determined. A set of categories can be determined based at least in part on the topic. A determination can be made that the content item corresponds to a first category in the set of categories. The content item can be associated with the first category, wherein the content item is included in a page corresponding to the topic within the first category.

Abstract: In one embodiment, a social-networking system authenticates a user of a mobile device, receives a request from the mobile device to install a software application, transmits data to the mobile device comprising the software application and an installation identifier (ID), receives another request including the installation ID from the mobile device to authorize the software application, evaluates the installation ID for validity, and transmits yet another response to the mobile device in accordance with the evaluation.

Abstract: Techniques to confirm account registration. In one embodiment, an MSISDN associated with a mobile device is received. It is determined whether to confirm registration of an account with a social networking system based at least in part on the MSISDN. Receipt of the MSISDN may include receipt of an HTTP request. The HTTP request may include an HTTP header with the MSISDN and a phone number associated with the mobile device. The MSISDN and the phone number may be compared. Registration may be confirmed based on a match between the MSISDN and the phone number.

Abstract: An intermediate server can receive a request from a mobile device to authorize a software application, transmit a secure ID included in the request to a social-networking system, receive an access token from the social-networking system indicating that the software application has been authorized, evaluate the access token for validity, and transmit a response to the mobile device indicating the software application is authorized. The secure ID can indicate that a user of the mobile device has been authenticated by the social-networking system. The access token can be valid when the access token and the secure ID both correspond to the user of the mobile device.

Abstract: Techniques to confirm account registration. In one embodiment, an MSISDN associated with a mobile device is received. It is determined whether to confirm registration of an account with a social networking system based at least in part on the MSISDN. Receipt of the MSISDN may include receipt of an HTTP request. The HTTP request may include an HTTP header with the MSISDN and a phone number associated with the mobile device. The MSISDN and the phone number may be compared. Registration may be confirmed based on a match between the MSISDN and the phone number.

Abstract: In one embodiment, an intermediate server receives a request with a secure ID to authorize a software application, transmits the secure ID to a social-networking system, receives an access token from the social-networking system indicating that the software application has been authorized, evaluates the access token for validity, and transmits a response to the mobile device indicating the software application is authorized.

Abstract: In one embodiment, a social-networking system authenticates a user of a mobile device, receives a request from the mobile device to install a software application, transmits data to the mobile device comprising the software application and an installation identifier (ID), receives another request including the installation ID from the mobile device to authorize the software application, evaluates the installation ID for validity, and transmits yet another response to the mobile device in accordance with the evaluation.