Vector One pointed me to Swivel, a site I find very interesting. I really like the concept. It would be really cool if they would incorporate mapping in addition to graphing. Data like this begs to be mapped.
Seems like they could start out really simple by providing points of cities and polygons of political jurisdictions. They could then provide users who upload data an option to create maps by joining them to these spatial datasets.
I wonder if Google will position their spreadsheets to compete more directly with Swivel. Since Wikipedia seems to lack a lot of the data and graphs offered by hard-copy encyclopedias, maybe they too will move in Swivel’s direction.