Abstract: A social networking system provides a user interface for a sending user to send messages to a recipient user in association with a content item posted by the recipient user in the social networking system. The sending user views a content item posted by the recipient user, such as a photograph. The sending user posts a direct message to the recipient user related to the content item. The direct message is displayed to the sending user superimposed over the content item. Subsequent direct messages in the conversation are also displayed superimposed over the content item.

Abstract: A social networking system provides a user interface for a sending user to send messages to a recipient user in association with a content item posted by the recipient user in the social networking system. The sending user views a content item posted by the recipient user, such as a photograph. The sending user posts a direct message to the recipient user related to the content item. The direct message is displayed to the sending user superimposed over the content item. Subsequent direct messages in the conversation are also displayed superimposed over the content item.

Abstract: An online education platform matches users for academic assistance events. The education platform receives offers for academic assistance events from providers, each of whom has accessed one or more textbook solutions documents. The education platform captures a time-sensitive request for an academic assistance event from a seeker. The request is associated with a textbook solutions document. Based on the textbook solutions document associated with the requested event and the textbook solutions documents accessed by the providers, the education platform pairs the requested event to at least one offered event. During a time window of the at least one offered event, the education platform detects proximity of the seeker and the provider and notifies the seeker and provider of the detected proximity. The education platform connects the seeker and provider, enabling communication between the users.