filiter not search the web
A web metasearch is a search involving many search engines at once. example: http://www.tripleme.com
No, they search only a fraction of the entire world wide web, called the surface web. There is a lot of information in this fraction, but it is not the entire world wide web. The deep web is the portion that is not indexed by search engines and is several times larger than the surface web.
search engines
Refining a Web search simply helps the search engines provide more relevant material to you.
These sites are known as search engines.
These sites are known as search engines.
Some good web engines can be found at the Software website and the Best Web Engine website. Both website give you information about the popular web engines.
Universal Search Engine: These are search engines which can search anything on the web whether it is news, maps, videos, images, websites, or books (etc.). Google, Yahoo & Bing are the three prime universal (web) search engines.
Examples of Web Search EnginesGoogle.com Ask.comYahoo.comTripleMe.comShopzilla.comaltavista.comWebcrawler.comDogpile.com... and many moreThere are actually many different search engines available out there. They can be categorized into groups depending on how they work. Say, for example, you are looking for a job, you need to use job search engines like Monster.com. If you want to shop online, then you need to use shopping search engines like Shopzilla.com and many others. If you are looking for music lyrics online, Getlyrics.com come in handy. Other search engines like Find.com are also valuable ones.
There are differen kinds of multiple search engines: Webcrawler.com, metacrawler.com, dogpile.com are searching both Google, yahoo, bing at the same time, and give results from both engines. Wiibeez.com is a multiple search engines in one page to search the web, music and movies, all search results are opening in new windows. This site is for making fast web searches and get fast multiple different results. Nowgoogle.com is a multi search engine based on different search results with the same keyword.
something around 30 billion web pages are indexed by search engines