We all know how the Web search works: all you need is to provide relevant terms that describe the concept or the topic you are interested in, click “Search” and the search engine will generate the list of results ranked by popularity.
But what if you don’t exactly know how to describe the concept or the topic you are interested in? What if you just want “something of the kind”?
In this case, you need to try discovery search engines: these tools rank the Web by similarity (not by popularity). They allow you to discover more pages based on the one you found most relevant.
Here are the three useful and advanced discovery search engine tools.
Google’s Related: Operator
I have mentioned this neat search operator when listing google tricks when you don’t know what to search for. I also reviewed the visualization tool based on this operator called TouchGraph which can be used as discovery tool as well.
Continues @ http://www.makeuseof.com