A search engine is one of the most important tools that help you find information on the web. Search engines are giant sized automated cataloguing and retrieval systems. In SEO Services Delhi Consultant e-Fuzion you find different typical with having large data bases of web pages and other information have found on the net. Upon specific query by the users these data bases are scanned and the matching results displayed. The utility of search engines in web search lies in the fact that they are the repositories of large amounts of information which can be searched very conveniently using certain key words. This natural language searching and many advanced features now available with search engines. It makes the recipe tantalizingly attractive. Hence it is no wonder that 78% of the users start their search process for any information via a search engine. Before we go any further lets clarify the difference between a search engine and web directory. Search engines as we have learnt are automated soft ware based systems which aid the web search. Directories are generally human beings. Directories are generally human based indexes in which the web sites are visited and catalogued by human beings. In SEO Services Delhi Consultant e-Fuzion the directories web sites are included in the categories and sub categories. These categories or taxonomies are specific to specific directories. Users can search for relevant sites in a directory by neither mining on the subject they are looking for or searching through key words. The most famous commercial directory is Google. There are hundreds of directories available. In SEO Services Delhi Consultant we find many categories search engine, which are not crawler based. They accept money to list your web site. These paid listings search engines will be dealt in greater detail in subsequent section.