Stormboard is a slick service designed for hosting collaborative online brainstorming activities. Stormboard allows you to create an unlimited amount of "idea boards" or Stormboards with up to five collaborators on each one.
World Map is a free program developed by the Center for Geographic Analysis at Harvard University. World Map is designed to enable creation, visualization, and exploration of geographically referenced information. In other words, you can build some great mapped data visualizations on the service.