I teach "Introduction to the Internet" at the University of South Florida. People who refuse to learn this vocabulary difference are just making it harder on themselves, because for the class they need to know about the World Wide Web, e-mail, telnet, Usenet, and FTP, none of which is the same as "the Internet." Saying "I can't connect to the Internet" when what they mean is that their Web browser is having problems (but they can still telnet to the school's machines and read their e-mail) is just making it harder for me or their ISP's tech support to give them any help with their problem.