These are some of my favorite people in the world, consistantly motivating and teaching. I generally spend most of my time with these guy helping them build their business. And so I have been asked questions about what an online trainer is and what they do for other clients. Here is a cool video by Gabriel Sey that will give you a great run down. Hope this sheds so light on it.
If you would like your own online presences you should SEE THIS.