Search indexes or engines are the predominant type of search tools one will run across. Origianlly, the term of search engine referred to some kind of search index, a huge database containing information from individual Web site.
Large search-index companies own thousands of computers that use software known as spiders or robots to grab Web pages and read the information stored in them. These systems don’t alsways grab all the information on each page or all the pages in a Web site, however, they grab a significant amount of information and use complex algorithms, calculations based on complicated formulae, to index that information.
Google is the world’s most popular search engine, closely followed by Yahoo! And MSN Live Search.
Popularity: 4% [?]


















There has been a lot of talk recently about how good SEO can improve your sites ranking, but I think that having a well coded layout is just as important. Your site should still make sense to people that have CSS and/or images disabled, and to achieve this the structure of your HTMl should be such that a plain html page can still be read and understood. This also makes it accessible to screen readers for partially sighted or blind people.