Skype and Dim Dim

I work in an elementary school and don't see us using Dim Dim as part of the curriculum. It would be great to use for professional development and working with work groups where people might be all over the state. I can see how Skype could be used to connect with experts like scientists who are willing to work with elementary age students. If students have a relative in an exotic location, it would also be fun to talk with them as a class.