1. A method of automatically generating a notification for presentation in a user interface on a computer system of a member of a plurality of members of an online computerized social networking system, the notification including a recommendation of a context pertaining to a topic of interest of the member, the method comprising: storing a plurality of content items in a database of the online computerized social networking system, the plurality of content items generated by the plurality of members of the online computerized social networking system; detecting a plurality of interactions initiated by the member of the plurality of members with respect to the plurality of content items: determining a topic of interest of the member based on the detecting of the plurality of interactions and based on a similarity between a plurality of subjects corresponding to the plurality of content items; and based on a detecting of an action by the member pertaining to the topic of interest, automatically generating the notification, the recommendation of the context identifying a relationship between the topic of interest and a subset of the plurality of content items stored in the database of the online computerized social networking system, the subset of the plurality of content items being maintained by a group of the plurality of members separately from content items that are generally-accessible by the plurality of members.