ePaLs

This site is a great idea. I cannot believe it is already as old as it is! The number of languages you can interact with make this site an invaluable tool for foreign language classes. The on site translator allows students to communicate with one another on a more comfortable level with the language barrier taken away. I also like that you can either specifically design a project with students in another school/country OR join in on already designed projects. This website is truly designed for the classroom user. The added benefits to working with students from another continent, culture, etc create an even deeper value than just simply working with students in your own classroom.
Being a Living Environment certified teacher, I would want to concentrate on the science aspect of what this site has to offer. Students could work cooperatively with students in another country to complete a lab exercise. Students might also work together to present a project on a topic the two created to both classes via web cam. This site would really allow for some great cross over teaching between my science class and a history or foreign language class.