Google and most other search engines use several separate mechanisms:
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- A program that scrawls the web to find sites , also called a crawler or a spider.Once found (crawled), site are placed in the search engine is index.
- Software that ranks sites are placed in the search engine is index to determine their order of delivery when some one uses google to search for a particular keyword or phrase.
| Search engine | Submission URL |
http://www.google.com/addurl/ | |
| Yahoo! | http://www.bing.com/docs/submit.aspx |
| Bing | http://search .yahoo.com/info/submit.html |
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