One thing I found interesting was the creation of the relationship. In the classroom, students can see you, interact, and it is done in real time, but online students might (at least on some level) see themselves as the only ones in the class. Where they would be more understanding of you taking a moment or two to help someone in the physical class, it might seem like longer in the online environment. Creating that relationship can help them to know they aren't being ignored in those instances.
