What indexes do exist take the form of commercial or University-based search systems. Despite claims to the contrary, no single search system indexes every web page. Several different search systems may be required to find the information you are seeking. There are literally dozens of search engines available. Many not only search the web, but allow access to electronic yellow and white pages, current news, stock tips, etc.
Web indexes offer a categorized approach to web sites.
They usually include a search engine as well. The Scout Report provides a fast, convenient way to stay informed of valuable resources on the Internet. Some search engines, such as Northen Light, divide search results into categories. This can help narrow down a broad search. If a very narrow search doesn't retrieve the information you need, try searching on the category of the information.