11. A computer-implemented method comprising: storing, in a social networking system, a brand page associated with an entity; storing one or more user profiles of users of the social networking system and a set of connections among the users, each user profile including information corresponding to at least one user interest, and wherein one or more of the user profiles includes a connection to the brand page, the information of each user profile including at least one affinity corresponding to the at least one user interest; receiving, from the entity, a plurality of content items for posting to the brand page, at least one of the plurality of content items including an additional content message for accessing one or more additional content items, and another at least one of the plurality of content items including at least one of: information about the entity associated with the brand page, information about a brand of the brand page, and information about a product associated with a brand of the brand page; receiving, from the entity, an association between each content item of the plurality with one or more keywords describing at least one of the brand of the brand page and the information about the product associated with the brand of the brand page, each of the one or more keywords defined by the entity; receiving, at the social networking system, a request to view the brand page from a user having a user profile connected to the brand page stored in the social networking system; accessing the user profile of the social networking system, the user profile associated with the user requesting to view the brand page; selecting, by the social networking system, content items from the plurality of content items, the selecting based on: an affinity of the at least one affinity, the affinity between the at least one user interest and the content items; the one or more keywords associated with each of the plurality of content items, and the information corresponding to the at least one user interest in the user profile associated with the user requesting to view the brand page, wherein at least one of the selected content items includes the additional content message for accessing additional content items; generating, using the selected content items, a personalized representation of the brand page for display in the social networking system to the user requesting to view the brand page, the personalized representation of the brand page containing one or more of the selected content items; and sending the generated personalized representation of the brand page for display to the user requesting to view the brand page.
11. A computer-implemented method comprising: storing, in a social networking system, a brand page associated with an entity; storing one or more user profiles of users of the social networking system and a set of connections among the users, each user profile including information corresponding to at least one user interest, and wherein one or more of the user profiles includes a connection to the brand page, the information of each user profile including at least one affinity corresponding to the at least one user interest; receiving, from the entity, a plurality of content items for posting to the brand page, at least one of the plurality of content items including an additional content message for accessing one or more additional content items, and another at least one of the plurality of content items including at least one of: information about the entity associated with the brand page, information about a brand of the brand page, and information about a product associated with a brand of the brand page; receiving, from the entity, an association between each content item of the plurality with one or more keywords describing at least one of the brand of the brand page and the information about the product associated with the brand of the brand page, each of the one or more keywords defined by the entity; receiving, at the social networking system, a request to view the brand page from a user having a user profile connected to the brand page stored in the social networking system; accessing the user profile of the social networking system, the user profile associated with the user requesting to view the brand page; selecting, by the social networking system, content items from the plurality of content items, the selecting based on: an affinity of the at least one affinity, the affinity between the at least one user interest and the content items; the one or more keywords associated with each of the plurality of content items, and the information corresponding to the at least one user interest in the user profile associated with the user requesting to view the brand page, wherein at least one of the selected content items includes the additional content message for accessing additional content items; generating, using the selected content items, a personalized representation of the brand page for display in the social networking system to the user requesting to view the brand page, the personalized representation of the brand page containing one or more of the selected content items; and sending the generated personalized representation of the brand page for display to the user requesting to view the brand page. 22. The computer-implemented method of claim 11 , further comprising: storing data describing one or more interactions between the user requesting to view the brand page and generated personalized representation of the brand page in an action log, the stored data associated with the user profile associated with the user requesting to view the brand page; and updating the at least one affinity of the user requesting to view the brand page based on the one or more interactions between the user profile associated with the user requesting to view the brand page and the generated personalized representation of the brand page.