13. The system of claim 12 , wherein the first user action is the submission of a first post.
13. The system of claim 12 , wherein the first user action is the submission of a first post. 14. The system of claim 13 , wherein the post comprises one or more of: a status update declared by the first user on a profile page of the first user; a wall post declared on a profile page of the first user; a wall post declared on a profile page of the second user; a declared comment on a status update declared by the second user; a declared comment on a wall post declared by the second user; or an indication or declaration by the first user of a like of a user action.