There are very few professional authors who focus in their written works on current and future development on internet. It is due to the fact that it is very difficult to estimate how this field will develop. It is very easy to make a mistake in predictions and authors usually try to avoid them. Another reason why there are not many official publications on this subject is a very fast deterioration of information in this field. On the other hand, I believe it is necessary for marketers to analyze current and future development as it enables them to prepare company and its products for the future. Aim of my thesis is to identify trends in marketing on internet in the most developped countries, describe the situation on the Czech internet with emphasis on verifying if foreign trends have reached Czech republic. Based on these findings I will formulate advices for marketers in the Czech republic. My secondary goal is to describe practical usage of different tools on internet.