Different Search Engine Approaches

1. Major search engines such as Google,Yahoo,Alta vista and Lycos index the large portion of the web and provide results that can run for pages and consequently owner whelm the user.
2. specialized content search engines are selective about what part of the web is crawled and indexed.
3. Ask jeers (www.ask,com) provides a Gena rod search of the web but allows you to enter a search request in natural language ,such as "what's the wether in seattle to day?
4. special tool and some major web sites such as yahoo,let you use a number of search engines at the same and compile result in a single list.