Do you like privacy? Do you shun surveillance and eschew spam? Do you like simplicity? If you answered yes to any of those questions, you'll love DuckDuckGo. DuckDuckGo is the brainchild of everyday American Gabriel Weinberg, and until news of the National Security Agency's widespread spying program broke last month, it was a baby brainchild.
This is an interesting interview because you get to hear from the founders of Endeca and DuckDuckGo. They explain their purpose for creating them. It also mentions a lot of things we've talked about it class including WorldCat.org and Wolfram Alpha.
This article shows the traffic before and after the whole NSA scandal to Google and DuckDuckGo. It gives visual representation to prove that while traffic did go up on DuckDuckGo, it in no way came close to competing with Google.