Having looked at several SecondLIfe virtual presentations I have come to the conclusion that there is difinitely a place for this application. I downloaded SecondLife and "walked" around a little bit. I can see where one could get totally absorbed into these worlds. I personally feel that when meeting with people live conferencing such as Skype etc. is better.
I performed a virtual knee replacement surgery at www.edheads.org. It was great because I was having knee replacement surgery. Educational speaking the virtual environment is very useful for example field trips, disecting frogs, and performing surgeries. All of this, at virtually (hahaha, no pun intended) no cost. I read all about the Linn economy which in itself would be great for an economics class. I feel that the applications are endlessly open to ones imagination.