Maintainers of 52°North web services currently have no information about the usage of their web services. User tracking is an important tool to understand user interest, requirements, and to ensure web services are working properly. But for OGC services, mere web usage statistics are not sufficient. They lack the thematic information. An administrator of a 52°North SOS does not know what the “most common” requested procedures are and when people are requesting data for which area and time frame. Are users mostly interested in the last week, or do they request historical data as well? Which sensor stations rarely get any queries?