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Google admits the open web is in ‘rapid decline’
(www.theverge.com)
This is a most excellent place for technology news and articles.
I think the term you are looking for is "Deep Net", although it originally meant websites that weren't indexed by web searches.
What I'm hearing is: I can replace saying "I have a dumb little WordPress blog that no one reads" with "I host a part of the 'Deep Net'.
Sweet.