This dissertation is focused on internet consultancy, which is a branch younger than ten years. By internet consultancy we mean the area covering online promotion, consultations in the field of technical quality and usability of web pages, measuring and optimization of their commercial performance. Thus we do not mean the consultancy in other fields (e.g. social, health, economic) just using the internet as its form of communication, even though the same name is used for this activity, as well. The goal of this dissertation is to define the branch of consultancy in the field of creation and promotion of web pages and map it from technical, entrepreneurial and economical point of view. The case-study in the second part is based on the indivi...