Looking for a great search tool? Check out: http://www.instagrok.com/ It's a mind-mapping search tool. When you search for a topic (say: Edgar Allan Poe) it pulls up a mind-map set of responses, urging you to look even deeper into your topic. On the right-hand side it captures videos, articles, additional topics to search about this person. And the added benefit to "grokking" is that the resources are vetted by the tool in order to eliminate the less trustworthy or junky search results. Unlike Google, Instagrok doesn't choose it's results based on popularity or payment--rather information and the most relevant and credible information needed by the user.