We teach our students via a computer; at the other end students react to what we write, our suggestions, our presence, and our enthusiasm. These last two items -- presence and enthusiasm -- are especially critical, for these form the critical "blood supply" that keeps that umbilical cord pumping away between instructor and students; when the flow of this is weak or non-existent the students' interest, engagement, and excitement for the course soon dies, and thus their online learning experience becomes one that is wasted. We can write and suggest all over the place -- that's easy -- but to make these come alive and having meaning our presence must be constant and our enthusiasm must be on-going.