This past week, I heard for the first time about

http://www.edmodo.com

This site is made-to-order for teachers in a formal school setting. They use this software-as-a-service to communicate with their students about assignments, homework, and questions. So I was thinking… this is a free service for teachers — and people who share the good news (missionaries) are teachers, right? So … does anyone have any experience using this site with Bible studies and Christian courses?