I’m sure you all know that the marketing costs for about anything we do in the world-wide web are increasing and extremely expensive. It is pretty common within all e-commerce companies to measure the success of marketing based on ASR (advertizing sale ration), CR (conversion rates), traffic, page impressions, ad impressions and many, many more KPIs. In fact looking on our company reporting every week I wonder why the customer happiness or the net promoter score are not more prominent compared to the these dedicated marketing figures.