Why avatars instead of video: a list of ten reasons to prefer virtual worlds. It's an openly interested list, coming from an avatar company, but that doesn't weaken its utility. It might be worth asking people (ysers, teachers) to come up with their own list, in order to get them thinking about choices and affordances.
I'd quibble with some of the points. Video is mashable, unless they mean streaming video. Maybe less mashable, but users can still do stuff with video. Bandwidth can be a serious problem for avatars when they're embedded in spatial platforms (cf Second Life). And yes, you can shoot talking objects on video.
Interesting how avatars and their 3d spaces appear separate from web 2.0 in this context. Mashable, yes, and some little bits of microcontent. But the list doesn't really rely on open content (imagine using a closed-platform avatar space on a walled garden mobile phone).
(via Second Life Future Salon)