Abstract: In embodiments of the present invention improved capabilities are described for facilitating sharing of user-submitted purchase information with other users of a social network. A purchasing information platform may secure permission from the user to connect to a user account, passively gather user purchasing information from the user account, provide a user-search facility to allow the user to find another user within the social network, allow the user to create a sharing user by selecting another user to share the user purchasing information with, publish the user purchasing information so that it becomes viewable to the sharing user, and allow the user and the sharing user to create commentary on the published user purchasing information. Related user interfaces, application programming interfaces, applications, and systems are disclosed.