Thoughts about Search Engine 2011

My thoughts about Search Engine in the year 2011.

I was studying Google's PageRank and Beyond by Amy N. Langville and Carl D. Meyer, and here are the thoughts that popped up in my head.

* To combat unethical SEO, the search engine must increase its IQ of spider and indexer.

* Most search engines generate revenue by selling profile data to interested parties.

* Users search for:

1. Wanting authoritative pages for searching deeply or for research.
2. Wanting hub pages, for broad search.

My idea: to make a ranking method of extracting only interesting pages.
The definition of interesting is rather broad, but in this case, sites that are buried in the deep web, but are high in quality. In one word RARE sites.