Ten years before the World Wide Web, there was ENQUIRE:

http://en.wikipedia.org/wiki/Enquire

ENQUIRE was basically a non-networked wiki with typed links. The web
grew out of some of the ideas of ENQUIRE and other systems like
Tangle.

Ten years after the World Wide Web, there was the Semantic Web:

http://en.wikipedia.org/wiki/Semantic_Web

The Semantic Web was basically a networked database with typed links.
The Semantic Web grew out of things people didn't actually need like
XML and PICS.

Since the Semantic Web is such an obvious copy of ENQUIRE, a kind of
ENQUIRE with committee-think, I was wondering why there was no happy
medium: a networked wiki with typed links. I remember Aaron Swartz
tried to make one of these in 2002 or so. It was called Blogspace.
There was an instance of something like this that he made called
Logicerror.

Anyway, I compressed this down and realised that the compelling thing
about such a system would be that you can taft like crazy through it.
So it should be possible to integrate it neatly into existing sites
like Wikipedia.

The only big problem was that I couldn't figure out how to make it so
that you could overlay Wikipedia to link back to your own wiki.

One other smaller problem is that when you made lots of small posts,
these aren't as taftable as large articles like you find on Wikipedia.
A personal wiki is never going to be as big and awesome as Wikipedia,
no matter how crazy you go about making new pages.

Anyway, when you look at the very earliest WWW sites, you find that
hypertext is being used in such a way that it's still really exciting.
You can almost feel that each new link is a revolution, and that makes
the early websites pretty fun. That sort of obsessive linking has
gone, except in sites like Wikipedia. It would be nice to craft sites
like that.