Here is search logs of 650,000 AOL users. It's very interesting to view search history of particular person and analyze his personality. Let's do it together! Read more about AOL search database scandal or view research papers on web searching.
evolution window
It was observe in evolution strategies that significant progress toward the fitness/objective function's optimum, generally, only can happen in a narrow band of the mutation step size σ. That narrow band is called evolution window.