8. A computer implemented method of supporting search queries building processes, said method comprising: providing a categorization scenario, which is a logic tree of search categories, said categorization scenario represents statistical relations between categories, using a query builder operated by at least one processing unit to create and present said categorization scenario; manually selecting a category from said categories scenario by selecting a node therefrom, wherein a user selects said category; dynamically building a query scenario corresponding to said selected category, said query scenario is a logic tree having nodes of search terms structured in a hierarchal manner that represents interrelations between said search term nodes, said interrelations are determined according to said selected category and according to browsing statistics, wherein said query builder builds and presents said query scenario; manually selecting a node of said query scenario to define a search query thereby, wherein the user selects said category; and automatically creating a search query comprising all search terms related to said node according to the hierarchal structure thereof, wherein said query builder creates said search query, wherein said steps are carried out using at least one processing unit of at least one server, and wherein the search terms in the query scenario are determined by using an algorithm that assigns a correlation level to each of said web pages' indexes, each said correlation level defines the correlation between the selected category and the index of each of the web pages indicated in a designated database including browsing and indexing information relating to visited web pages, wherein said search terms are associated with web pages having a correlation level that is above a threshold value, and wherein the interrelations between the search terms defining the hierarchal structure of said query scenario are determined according to browsing statistics of the associated web pages.
10. The method according to claim 8 further comprising determining term-relations between all search terms of each created search query according to the interrelations between those terms as defined by the hierarchal structure of the respective query scenario.