Positioning in search systems is understood to mean an output of pages of a site to the most favorable places in results of search systems on the requests of possible target customers of a site.
Successful positioning in search systems is the task which does not have the unique solution because every site is individual. Perhaps the key rule is to make all pages visible to a search engine robot and clearly select and correctly place the key phrases. Proper selection of keywords is very important. And above all one needs to know the principles of operation of search systems.