Moreover, you listen, which means you learn English words and phrasing from others. Of course, you can text on Skype, which lets you practise your English writing skills just as you do on other social networking sites, but its main strength is using it for voice or (if you're brave) and video chats (if you're really, really brave). There are even teachers on Skype who offer traditional English lessons and there are conversational groups that meet more informally.