Context : OnWiki
More and more index pages, overviews, slices, summaries, hubs and themes.
Wiki should have more link pages than content pages. It rolls the space of wiki into a tiny, superdense world.
See also :
In fact, somewhere, long ago, I predicted that indexes would proliferate and outstrip basic content on the web. Can't find that now so I can't make a claim for insightful thinking, but the principle remains true. Think about the amount of human trade and activity which is parasitic on raw agriculture and commodity production (like mining).
On the web, the same will happen. Raw data is the commodity and value is going to be added by all sorts of parasitic services. SearchEngines are just a kind of index, SocialSearch and TheFlowInternet are other kinds. Maybe MashUps are not quite indexes, but they are also parasitic and will grow in importance.