This is an example of  a mind map found on the website  http://www.text2mindmap.com

Concept maps can be very useful  for students.  This map was fairly easy to create. It is an outline for a case study assignment.  The site allows one to indent subtopics in levels of branches. One can change colors of the levels and the entire map. Classes could use concept maps to show what needs to be included on a project or used for studying.  The mind map can be saved as a jpeg.

This tool is user friendly.  I think middle and high school students would find this useful. I think students could complete a mind map for studying for tests.  I would use this in a classroom. Older special education students may even enjoy creating this tool. It would b a nice assignment to be handed in before a research paper. Students could use this site to create an outline for many different assignments.