If you have ever participated in a Skype conversation between classrooms and wished that you could have a recording of it for later use, Call Graph may be of interest to you. Once Call Graph is installed you can record up to 1GB of Skype conversation for free. The video embedded below provides a brief overview of Call Graph.

Applications for Education
Call Graph could be a good piece of software for teachers trying to connect classrooms and make podcasts of those conversations.