“… complex datasets require complex visualizations. In general though, simpler is usually the best way to go in the sense that you should make it as easy as possible for a reader to understand what’s going on. You’re the storyteller, so it’s your job to tell them what’s interesting.”
—Nathan Yau, author of Visualize This: The Flowing Data Guide to Design, Visualization, and Statistics and the Flowing Data blog (that I should read more frequently). Found on SmartPlanet.