Teaching ethics and responsibility on the internet is the responsibility of anyone working with students and internet resources, as others may not have the knowledge, skills, or time required. Students must understand ethics transfers between contexts, so if something is important at school and home, it is also important online. Required modules for any course include copyright and fair use, information literacy, and internet safety. Optional modules provide guidance on assessment, collaboration, and using Web 2.0 tools like blogs, wikis and social bookmarking.