21. The method of claim 14 , wherein the determining of the relevance between the user profile and each of the other user profiles is based on a combination of: a measure of interaction between the user associated with the user profile and each other user associated with each of the other user profiles; a measure of reliance between the user associated with the user profile and each other user associated with each of the other user profiles; and a measure of shared commonalities between the user profile and each of the other user profiles.
14. A method comprising: storing, by at least one computing device, a plurality of content instances associated with a plurality of user profiles; determining, by the at least one computing device based on a predefined relevance heuristic, a relevance between a user profile and each of the other user profiles included in the plurality of user profiles; prioritizing, by the at least one computing device based on the determined relevance between the user profile and each of the other user profiles, the plurality of content instances relative to one another; and providing, by the at least one computing device for display, data representative of the prioritized plurality of content instances; wherein the predefined relevance heuristic comprises at least one custom relevance condition defined by a user associated with the user profile.