I used Second Life to collaborate with fellow students from around the world during my time at Harvard. We set up chat sessions, drew out wireframe sketches for various projects, and basically made learning a bit more like a video game.
So if you’re considering the usage of virtual worlds like Second Life, check out this terrific presentation from David W. Deeds on Slideshare.
He looks at best practices, what worked, what didn’t, and who should use virtual worlds. A great presentation. Enjoy!