link juice

Link juice is a slang term referencing the creation of internal links to optimize crawling of a web site.  A popular analogy is an ant hill that has water poured into it.  As you pour, the water seeks out all the tunnels the ants have made.  Likewise, when your web site is crawled, links represent tunnels and the spider is able to travel further exploring additional web pages.  Link juice refers to how easily a spider is able to crawl your site.  Like, how many internal links have you made....

Link juice can be increased with tagging content, i.e. keywords with links associated to definitions.  Keyword clouds, which demonstrate the most popular keywords used in the web site.  Keyword clouds have links associated with them as well.  Contextual links, referencing other topics or definitions within a text also increase link juice.