Modeling Reality with Virtual Worlds

We have heard of second life, a virtual reality world that simulates the real world. These can be used for companies in many ways. The major way it can be utilized is if a company is world wide and new employees need to get in touch with other employees across the world. They can create their avatar and meet other people within the virtual world created by the user. That is the pro, the ease of the user who is able to meet other people "face to face". A con to this is that it can hinder their real world communication skills like actually talking to someone face to face or seeing someones expression to what you are saying. I think the future of virtual worlds will include more realistic images of the the person looks like and their expressions as well. I believe it will look more real and less virtual as time goes on.