A Library Demand List

This visualization takes the current New York Times Best Sellers list for combined print and e-book fiction and scales each title according to the demand for its e-book edition at a collection of U.S. public libraries, selected for their size and geographic diversity.

I wouldn't have found this single-use visualization particularly notable if not for the wonderful little sounds that play when you click on the different scaling buttons. I love that. More apps and websites should use (optional) sound. Unobtrusive, helpful feedback.