I just set up a free account with Mindmeister, a free online mind mapping site. The tool is easy to use. I was initially presented with a mind map that consisted of the directions for using the site!

I was able to save a mind map as a pdf and print. There is also the capability to share the map online with others, allow them to collaborate, and even let the entire world view your creation.

Below is a demonstration of the ability of this site to embed a mind map into a blog.