Search engine, Dwell Ranking, read more here, http://qz.com/129879/this-is-the-first-interesting-search-engine-since-google/
You need to install a plugin, and then it tracks how much time you spend on a page – these statistics are used for relevancy of page and returned in your search.
– What if i never go to a page? rather no one does
– New sites?
– Concentrated from a community (limited user set)?