Zero-click Info (?)
nofollow is an HTML attribute value used to instruct some search engines that a hyperlink should not influence the link target's ranking in the search engine's index. More at
Wikipedia
Google PageRank - PageRank is a link analysis algorithm, named after Larry Page, used by the Google Internet search engine that assigns a numerical weighting to each element of a hyperlinked set of documents, suc...
Search engine optimization - Search engine optimization is the process of improving the visibility of a web site or a web page in search engines via the "natural" or un-paid search results.
Search engine spiders, also called web crawlers
Spam in blogs about nofollow
Robots Exclusion Standard (robots.txt)
