Facebook April 19 introduced Community Pages that feature Wikipedia information and a new option to link their profile information to Facebook Pages they endorse. Users who want to add more connections to their profile can click “Like,” which replaced the “Become a Fan” option. Facebook, which also offered new privacy features to let users limit which of their friends may see what info they decide to share, is counting on these new Pages options to help strengthen the connective social tissue among its 400 million-plus users.