Simple Spatial Tool
The simple spatial tool allows anybody to put "dots on a map" as well as create more advanced visualizations from spreadsheets. It can pull data from private Google Documents Spreadsheets. This allows collaborative collection and editing of private spatial data prior to visualization.
The SimpleSpatial tool is free open source available on github. SimpleSpatial.net (this website) is a live version of that tool running on Amazon's elastic compute cloud, maintained in my free time, and is paid for out of my pocket. If you find it useful or enjoy using the tool (are just feeling generous) consider supporting the project.