Voki training--er how do I use this?

It's time to get started on creating my Voki presentation for TCEA. I'm looking forward to it because I want to make it applicable to teachers who have 100 students. Some questions that come to mind are:

1. It's fun, we get that, but how can users/students benefit?
2. You can give a student a cool tool, but how do you make them want to use it for learning?
3. Will voki work on several different platforms?

More to come later.