Evolution of Web Search

I have a guest post about Web search evolution at Alt Search Engines.

In short, the main point of the article is as follows.

There are two basic types of quality Web search engines need to be aware.

1) There is a quality about how well the search results produced to match the user requests.

2) There is a quality about how a search engine has produced the link resources based on the search results so that the produced link resources are more feasible to be further manufactured.

I argue that it is the second quality that drives the evolution of Web search.