Is Online Horse Training A Replacement For Live In Person Professional Instruction????

I recently came across this website that teaches beginner through advanced riders how to train their horses from home with the use of online videos, mp3’s and other online training techniques.  What do you think of this new era of online training?  Do you think it depends on what kind of rider you are…beginner, intermediate, advanced?  Do you think it replaces a live physical trainer?  I’m curious to hear your thoughts.