Looks like a neat idea, but it's almost unusable on Mac Chrome with a Magic Mouse -- the scrolling zooms me either out to the moon or in to a single pixel. Is there any information about the site available that isn't in the Ideaome format?
I had barely opened the tab when a mouseover started causing an infinite element resize loop!
It seem to be navigable without zooming, for example hovering on the little bubbles make them bigger and clicking on some bubble takes you to a new page.