Moving around in Second Life can be so clunky that some professors and students have decided that it's just not worth the hassle. I regularly get stuck between pieces of virtual furniture, wander around aimlessly looking for the person I'm trying to meet up with, or lose patience as I wait for my online avatar to walk between virtual classrooms. If all you need to do is chat with far-flung students, there are many easier ways to do it.
via chronicle.com