Fusion Tables from Google Labs

From Google Labs description:

“Fusion Tables is a service for managing large collections of tabular data in the cloud. You can upload tables of up to 100MB and share them with collaborators, or make them public. You can apply filters and aggregation to your data, visualize it on maps and other charts, merge data from multiple tables, and export it to the Web or csv files. You can also conduct discussions about the data at several levels of granularity, such as rows, columns and individual cells.”