Second life is a venue worth getting to understand. I’ve seen some applications that might turn out to be useful in the future. It’s a virtual meeting and presentation space. People need to meet and present to each other in all kinds of situations—including academic and business situations.
I don’t really think SL is ready for prime time. People are still figuring out how to use it, whether for social and gaming or commercial or education purposes. I guess of all the functions, the gaming is the most developed. That’s not something that interests me, however.
I would like to learn SL. I have a feeling that it is going to become an important interface in the future. Perhaps the Google of social networking. I think it will be useful to offer a visual interface. Hopefully, some day, we’ll be able to have input devices that can translate facial and body expressions into movement by our avatars. Even without that it offers new ways of presenting information from a distance.
Of course, having said that, I haven’t really answered your question. Unfortunately, I can’t answer it, since I am newer than even a newbie, never having been there, personally. Still, I think it’s an interesting place.