the Users page (Figure 11.2) to select a user to follow. Calvin navigates to the profile of a second user, Thomas Hobbes (Figure 11.3), clicking on the ‘‘Follow’’ button to follow that user. This changes the ‘‘Follow’’ button to ‘‘Unfollow’’ and increments Hobbes’s ‘‘followers’’ count by one (Figure 11.4). Navigating to his Home page, Calvin now sees an incremented ‘‘following’’ count and finds Hobbes’s microposts in his status feed (Figure 11.5). The rest of this chapter is dedicated to making this page flow actually work.