It is the search engine, finally, put your opinion on the website of potential customers. Therefore, it is better to know how search engines work effectively and that information about customers to open a search.

In principle, there are two types of search engines. The first is called by the crawlers or Spider.

Search engines use spiders to index websites. If you have pages of your site into a search engine, using their model page, the search engine is Spider-index your entire website. A “Spider” is an automated program, is the search engine system. Spider visits a Web site, read the content on the location, the site meta tags and follow the links that the Web site links. The spider, then all this information is still a central repository where data is recorded. He visits each link that you have on your website and index pages as well. Some spiders index is only a certain number of pages on your site, so that not a page of 500 pages!

The spider is back at regular intervals on sites to see if any information has changed. The frequency with which this happens, by moderators of the search engine.

A spider is almost like a book, which contains the table of contents, the actual content and links and references to all Web sites, during their research, and can contain up to one million pages per day.

For example, Excite, Lycos, AltaVista and Google.

If you use a search engine to find information, it is in fact the research on which the index has put in place and no real research on the Internet. Various classifications of different search engines because each search engine is not the same algorithm used to search indexes.

One of the things that the algorithm of a search engine is the search for the frequency and location of keywords on a Web page, but it can also identify, filling artificial keywords or spamdexing. Then the algorithms analyze how the pages of links to other sites on the Web. For control, as pages of links with each other, a motor can also determine on a page that, if the keys of these sites are similar to keywords on the page.