I've been reading a fascinating paper by Danyel Fisher, of Microsoft Research. He's one of the folk behind the SNARF email triage tool, and is currently looking at how people use online maps.Here's one of his images, a look at how map searches of Las Vegas focus on the Strip.
"How we watch the City" is surprisingly beautiful (in the way many computer-mediated visualisations are). To show how people and searches gravitate to specific places he's created an application that draws a heat map over Microsoft's Virtual Earth, letting him zoom into the "hottest" searches, bright clusters that illuminate the virtual space of the search engine. With access to the services search logs, he can show just how searches relate to geography.
Our eyes are bright in the digital world.