SEO
full spelling ： Search Engine Optimization
SEO is to make efforts to show users' own Web page in the top lists of search engine, or technology for that.
Search engines show Web pages registered according to key words, and the order of appeared lists is determined by each search engine independently.
As the list goes closer to top, it is easier to be found by users. To increase visitors, some companies make efforts to push up their Web pages in the list.
Some businesses dealing with the establishment of Web sites prepare SEO on the menu.
It is hard to change the order when the pages are registered manually in Web directory, while in robot type of search engines which determine the order according to algorithm by full-text search, it is possible to control the order to certain extent by analyzing the algorithm.
For example, it is possible to control by choosing right key words and increasing mutual links. It is getting harder to "capture" because algorithm for ranking is becoming difficult to solve. Moreover, because the system often changes, it can be said that there will be no certain way other than to widen recognitions by making good contents.