As a former educator myself, I know that there are many different learning styles. For example, I am terrible at staying focused when my only option is to listen to an audio lesson. I prefer visual learning. Others learn best when getting their hands active in the learning.
Since we aren't all alike, I think the opportunity to learn online is another great resource for those who do best in this learning style. Being able to provide learners with a variety of teaching modes is one of the gifts of living in this century, in my opinion.