Interesting articles on web spam and search engine spam,

Everyone will be interested to know how search engines combat spam, here are 2 papers from stanford which explains perfectly how search engines combat spam,



https://www.searchenginegenie.com/spam.pdf

https://www.searchenginegenie.com/spam1.pdf

One article says everything done to improve ranking is spam, we disagree with it,

Article says

What is web spam?
Spamming = any deliberate action
solely in order to boost a web page's
position in search engine results,
incommensurate with page's real value
Spam = web pages that are the result of
spamming
This is a very broad definition
SEO industry might disagree!
SEO = search engine optimization
Approximately 10-15% of web pages
are spam