30 Jun '17, 8pm

I love that one of the patents Google acquired from IBM was their one on Dangling Nodes:

Yes. Dangling nodes can be pages that have no links on them pointing out at all, such as most PDFs, PostScript pages, HTML pages with no links, text pages, and others. But dangling nodes can also be pages that do have links pointing out from them that a search engine doesn’t know about, if a search engine knows about links pointing to those pages. Google may consider a page to be a dangling node if the page has a link pointing to it, but Google cannot crawl the page because: The search engine is disallowed from crawling the page because of a robots.txt disallow statement, or; There’s a meta robot statement in the head of a page indicating “noindex/nofollow” or even “index/nofollow,” or; There’s a link to the page, but the page is behind a required login, so the search engine doesn’t seen any links pointing out from it, or; The page is linked to, but no longer exists, or; T...

Full article: http://www.seobythesea.com/2007/08/search-indexing-dead-e...

Tweets

@bill_slawski you wrote 11 years ago this

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