Assuming you are now popping into LTC in Second Life, you might want to check out the Educause brief 7 Things You Should Know About SL:

What is it?  Who’s doing it? How does it work?  Why is it significant?  What are the downsides?  Where is it going? What are the implications for teaching and learning?

Here is a taster:

Most of the educational settings in Second Life look and function like traditional classrooms or lecture halls. This is fine for instructors teaching distance courses who need a medium for synchronous communication, but it does little to address the fundamental question of how teaching and learning can be changed through virtual worlds. As new ideas are developed and tested, instructional settings and activities in Second Life may evolve into forms that bear little resemblance to the real world.

Filed under: Learning Environments, Second Life, Technologies, Virtual Learning by Agnes Bosanquet