Someone told me recently that when they offered an online course through WebCT, the biggest issue they had was helping people use the interface.

A recent article in e-Learn Magazine discusses the difference between learners and uers:

Think of it this way: In a history course, a learner needs to know how to write an essay—that is forming ideas, doing research, synthesizing information, and presenting cogent arguments on a position. A user, on the other hand, needs to know how to submit the essay—what tools to use to create it and where and how to transmit it so that the instructor receives it on time.