Often selection of keywords can also determine the success of your search. For further information consult the help pages available for most search engines. What's not included Search engines can index millions of pages in their databases, but none of them index the entire Web. The content in sites requiring a login Intranets One of the biggest disappointments for most people is the lack of free full-text journal or newspaper articles on the Internet. What is included Web pages can be created by just about anyone with an Internet connection.
Authors can be from academia, schools, institutions, government and commerce.
Their reasons for creating web sites can vary from dissemination of information to advertising services or products. It can be very difficult sometimes to determine the authorship or quality of information. It can also be very difficult to find information on the Internet because there are no standards or controlled vocabulary. Knowing the kind of information you are looking for determines which sources to consult. There are several search techniques which can be used to improve the results of your search.