... scarce, either. That's the situation with information and services today. They're abundant and cheap. Information on the Web, for example, is plentiful and free. Software provides another example. The most popular Web server is not made by Microsoft...
Permission Marketing: Turning Strangers Into Friends And Friends Into Customers - الصفحة 42
بواسطة Seth Godin - 1999 - عدد الصفحات: 224
معاينة محدودة -