Disclosed are methods, apparatus, systems, and computer readable storage media for maintaining anonymity in an online social network. In some implementations, a user can be designated a ghost user with respect to an entity in the online social network. One or more invisibility levels can be determined for the ghost user. Data indicating content to display in accordance with one or more invisibility levels can be generated and provided to a display device configured to display a presentation of the social network feed associated with the entity in a user interface associated with a second user. Also disclosed are methods, apparatus, systems, and computer readable storage media for designating a proxy in an online social network. In some implementations, a first user can be designated as a proxy user of a second user in an online social network with respect to one or more entities within the online social network.