There is no one way that works best for everyone when it comes to training. Offering courses online just gives another avenue for people to use. They still get plenty of interaction with the instructor & fellow students when they get to the water. I really don't see the big deal, online scuba classes have been going on for at least 2 years that I know of. SDI started it and others are seeing the benefit and starting their own. It makes perfect sence in todays world. If we want more people involved in diving, we need to provide as many ways to get them involved as possible.