Does your company have a page on Facebook? Very good! Do you communicate on a regular basis with your facebook - fans? Even better! Have you already got a concrete economic advantage from the use of Facebook or are you able to measure this benefit? No answer? For different national and foreign clients, among these an international fashion label, a leading tourism destination and an international gourmet event, we have developed specific Facebook-applications. Doing so we guaranteed that the Facebook community of this businesses didn’t only experience a linear but an exponential growth.