In Facebook, an individual's profile has a range of audiences. The friend network, the intended audience, and the expected audience, described in the Methods section, are three such disclosure networks. The friend network represents all connections publicly articulated in the social
network site. As friend networks are normatively large, individuals in our sample focus profile-viewing attention on a smaller subset of their friends list. In an explicit test, we asked participants how many Facebook profiles they had looked at in the past week. The mean answer, 6.4 (SD=9.3, 0|100) indicated that profile-viewing attention is focused primarily on a subset of the friend network. It should be noted that the focus on a subset of profiles does not necessarily preclude the transmission of information; the News Feed and other targeted channels (direct messages, chatting) serve this purpose.