I took a hybrid course which is online but you meet with a real teacher once a week and my biggest problem was that we used blackboards software to do discussions and such and it was a terrible experience.
When I was a student at the University of Washington I worked at the Business School's IT department for a couple years.
One of my jobs was to set up Blackboard course websites for instructors. It was about as much fun as filling out a tax return. Nothing but filling out forms, selecting options, and other monotonous things like that.
Using it in my classes was about the same experience. We really just used to it download the syllabus, assignments, and other documents the instructor posted. No one used the Discussion Board or any of the other Blackboard features.
It made me wish I had just taken a normal course.