Internet users expect quick response times. Instructors should plan to log on to the course at least five days out of seven and to respond to questions and to student work in a timely manner. It is wise to spell this out in the course information, e.g.: "You can expect responses from me to most questions by the next working day and to written assignments within X days." The instructor will be responsible for maintaining course materials on the web: Deleting or replacing links that are suddenly de-activated, stating the current term's due dates, etc. To protect student privacy and to control use of any copyrighted materials, access to courses will be limited to students enrolled.