Students' attendance (Score 1)

I am not sure what classes you are taking but in my classes (which relate to telecommunications, strategic planning and project management), if I student does NOT participate the student is losing. I require attendance and I require attendance. Of course, I am teaching adults and maybe that is the difference. The students in my classes have an opportunity to learn from one another, from the required reading, and from the instructor. I would not allow "surfing" to go on in my class.