Here's an interview by Red Herring on a new search engine called Mooter. The two comments by the founder that I most interesting were :
[Google has] lots of challenges ahead, including the ‘popularity’ approach, which assumes what is most relevant for everyone is the most relevant for you, and the ability of webmasters to push up the ranking of their sites. Mooter lets users drive the choice of what is relevant to them.
We believe that there is no one-size-fits-all correct ‘answer’ to a search query. The answer could be different for two different people, or even for the same person the next day. We believe that search technology should be responsive to those differences.
Mooter customises its results based on each individual user's previous searches and its evaluation of each persons preferences. The CEO used her training in psychology to help design Mooter because she says "[other search engines] obviously had been designed by people who know a lot about data but don’t understand humans and how we are hardwired."
Mooter also uses a visualisation technique for search results that groups results into clusters. For example, I typed in "reliance ambani" and was shown results clustered under topics such as "india", "chairman", "dhirubhai", "mumbai", "infocomm" and "energy".
As far as I can see, the site is at a very early stage of development. Many things could be improved, simply by benchmarking the site against other existing sites. For example, I couldn't point you directly to the URL of the search results page I generated because it didn't contain the search terms. What I see is the (pretty much useless) URL http://www.mooter.com/moot. If you clicked on this, you wouldn't see the search query I typed in.
The site also seems to have performance-related problems. I clicked on the cluster labelled "energy", and my computer has now practically frozen up. Task Manager tells me that IE is using 100% of CPU time.
But still, the fundamental ideas seem to be interesting. Must keep an eye out for future developments.
Link: Searching your thoughts