Inspiration

Inspiration is a great tool for teachers! I feel that when I actually become a teacher I would consider purchasing this tool to map out unit plans for the students and that sort of thing. Right now though it is not something I would want to buy simply because I do not use enough graphic organizers. This tool could easily be used in a secondary class as a way for students to show me they understand the material and how it relates to one another by creating their own. My main question though is, is this a well known tool? Do most high schools have this application purchased and available for campus use or is this something that I would have to purchase on my own. I guess I would like to know, how popular is this is the education world?