Myself and Stefan Gelfgren have been running various projects and experiments using the virtual online social world of Second Life for over a year now in HUMlab. Today we received a result from some of our work with a chapter published in Learning and Teaching in the Virtual World of Second Life, edited by Judith Molka-Danielsen and Mats Deutschmann.
There are a number of texts currently available on how to use Second Life and other virtual worlds in teaching and learning. The difference I detect in the volume to which we contributed is that it is somewhat reflective and theoretical. While suggestions are plenty in Learning and Teaching in the Virtual World of Second Life, there is also a strong focus on the contexts for learning and teaching using SL.
If anyone is interested in going deeper into the text, it can be purchased here.