This list is established by the algorithmic calculation of the valences of websites. This makes them to a true outcome that is purely from the classification of web pages for the relevance of the found search term. In contrast, search engines also offer paid listing. In this case, the providers of the websites pay for their position on the results page. Qualitatively excellent search engines, such as Google, don't mix organic with paid listings. Because of the clear breakdown of the results page, the user it is immediately obvious whether it is an organic or a paid listing. This form of transparency and fairness for the user is not provided by every search engine. If the user specifies, for example, the keyword "Berlin" in the search engine Google, than the paid links appear certainly delineated on the right side of the screen or sometimes these appear colored in on the top of the page. All the other results for "Berlin" are listed in order of their relevance to the topic. If the user's intention is to book a hotel in Berlin, he hat the opportunity to target the paid links, without having to read through pages until you find what you are looking for. By separating the organic listing from the paid listing, the user finds his information much quicker.