from SciTech Daily:
Organizing knowledge as a concept map means you have to understand what you're mapping
update, June 3: I was particularly interested in using this as a possible site map tool (for a website), because it can automatically create web pages out of the tool. However, I've since decided that it will not help me enough because (1) it is not very flexible in shape styles, etc., and (2) it forces the page that comes up to come to a new browser window. I needed the resulting page to be in the same frame. I will be using image maps.