I'm a techie, so when I find something that works for me to help organize my ideas, I not only use it, but also share with my friends. It's an easy free tool, and it is basically a mind map called Mindmeister. Here's a picture of one of mine I made. It's extremely easy to use, and you can use a limited free version or pay as little as $4.99/month:
If you'd use it regularly, it's worth it. I'll probably upgrade since I do like it. If you're interested in signing up for free, click here.