It's suitable for all age groups and can be used to teach subjects like geography, history, languages, mathematics and science.
Not sure how this will really work with kids in your classroom? Read this short post from a teacher explaining the process. She lists the types of questions you need to prepare to assigning jobs during the Skype session.
Would this engage your students? Take a few minutes and watch the video. Could your students guess the location after 20 questions?