This ratio really doesn't represent the issue asked. The 'users' of Facebook maintain their own computers and so the server farm is a different animal to handle. I understood the question to be more along the lines of how many business level users, their machines, and related servers, should an IT dept. handle. I contend that teaching the user to fish instead of giving them a fish will be the future of computing, unless you plan on creating and maintaining two seperate classes of employees. Those who can use a computer and those who maintain the computer. Every user should know enough to 1)keep from screwing up their machine and 2) know enough to fix the simple isses. Admins are for problems that can't be readily solved by a reasonably adept user or one that affects all users.