All I've seen of this is in Microsoft commercials, where the real work behind the dazzling effects of technology on the classroom is edited out. The danger of online learning is its lack of a real professor. In essence, the computer screen itself, which can't usually talk, has replaced the professor as a tool for the transfer of text into the mind of the student. However, even this definition is flawed. Professors are not just tools to transfer knowledge, but human touchstones of this knowledge.
Professors are the human embodiment of what the material means.
What the material communicates by itself can be seen in the career of this one person who strives to communicate not only the material, but also the importance of the material. Learning is one thing, but learning with purpose should be our goal. In seeking to replace the professor, we are treading on very dangerous ground. The computer, a soulless machine, may provide many conveniences but can never replace the nuance and subtlety of a human being. We learn these things to bring us closer to human truth.