I don't need my car to learn english I don't need to take the car or my bike to go to a presencial class. I prefer to use skype to improve my english. The quality over voip is very good. With italki I can speak with several people over the world and any time. I like informal conversation class. Normaly when you go to a class you have the same teacher. Hear you can choose your teacher for every session. When I am going to speak with other person I see his video profile. In the real life is difficult to choose the teacher that you like. I am going to do next days test of english leve. I did it in my town but I prefer to do it again over this platform.