Download - How Search Engines Work
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ORGANIC SEARCH
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CRAWL
INDEX
RANK
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CRAWLING
KnownWeb
pages
KnownWeb
pages
Index ServersIndex
Servers
CrawlerMachinesCrawler
Machines
GooglebotGooglebot
Doc ServersDoc Servers
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DEVELOPING THE LIST OF KNOWN WEB PAGES
KnownWeb
pages
KnownWeb
pages
Prior CrawlsPrior
Crawls
/addurl/addurl
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PEREMECH
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CRAWLING FOR PEREMECH
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CRAWLERS IDENTIFY THEMSELVES
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ROBOTS.TXT – EXCLUDES SITES FROM CRAWLING
whitehouse.gov/robots.txtwhitehouse.gov/robots.txt
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CRAWLERS SHOULD NOT HOG RESOURCES
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CRAWLING PROBLEM: THE WEB IS VAST
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CRAWLING PROBLEM: THE HIDDEN WEB
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INDEXING
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RANKING
Closely guarded, proprietary algorithm
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RANKING
Organic Search Results
Keyword Phrase
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RANKING – THINGS THAT MATTER
Can you find the word Lobster?
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WHY IS RED LOBSTER RANKED HIGHER?
Can you find the word Lobster?
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HOW CAN I IMPROVE MY RANK?
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BASIC SEO CONCEPTS –TEXT
KEYWORD PROXIMITY
We sell live Maine lobster
Home of Maine’s best lobster
All of our lobsters come from Maine
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BASIC SEO CONCEPTS –TEXT
KEYWORD DENSITY
What percentage of the words on this page are lobster.
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BASIC SEO CONCEPTS –TEXT
KEYWORD FREQUENCY
The keyword lobster is visible 32 times and occurs 182 times on the page
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BASIC SEO CONCEPTS –TEXT
KEYWORD PROMINENCE
LobsterLobster
Lobster
Lobster
Lobster
Lobster
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BASIC SEO CONCEPTS – LINKING
LINK EXCHANGE AND PAID PLACEMENT
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BASIC SEO CONCEPTS – LINKING
An article written at thefreelibrary.com
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BASIC SEO CONCEPTS – LINKING
PAID PLACEMENT
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BASIC SEO CONCEPTS – LINKING
LINK EXCHANGE - RELEVANT
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BASIC SEO CONCEPTS – LINKING
LINK EXCHANGE – NON RELEVANT
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BASIC SEO CONCEPTS – LINKING
LINK SPAM
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BASIC SEO CONCEPTS – LINKING
COMMENT/ FORUM SPAM
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BASIC SEO CONCEPTS – LINKING
COMMENT/ FORUM SPAM
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LINK EXCHANGE IS CONTROVERSIAL
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USER RELEVANCE
LOCATION
USER ID
130.111.115.24
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USER EXPERTISE VARIES
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PHOTO ATTRIBUTIONS
Slide 10: 'OINK! OINK!’ www.flickr.com/photos/49968232@N00/51679641
Slide 11: ‘The Vast Web’ wikicommons.com
Slide 13: 'Royal Guards’ www.flickr.com/photos/23697065@N05/2356109302
Slide 17: 'Yoda (IMG_3308)‘ www.flickr.com/photos/73531322@N00/194828922
Slide 30: ‘Vera Cruz’ BAM/Photofest