As soon as we enter internet, we can face many words refer to some new meanings. Actually, in the world of internet, there are some basic facts, which must be put into consideration. Initially, it must not confuse with the various words and idioms on the web. Web directories refer to some web sites as a special in linking to them. They also are specialized in categorizing the concerned links. Those directories do not show lists of web pages according to keywords, but they determine sites according to their subcategory along with category as well. It must consider that the directories permit the owners of sites to submit their sites links and review submissions as well. 

It must notice that web directories are so general and may list sites across regions, categories, and languages as well. Generally, most of them depend on special areas and languages as well. There are different categories of listings, which are focused on the paid price of inclusion. Those categories are such as free submission, reciprocal links, paid submissions, no follow that means that the search engine cannot follow the special link, featured listing to give homepage as an example, bid for position, and affiliate links as well. Knowing the basic meaning of them will be great in facilitating the dealing with internet.