I enjoy using bubbl.us for the brainstorming process in any creative development, from a news piece to a design prototype or even for my own thoughts! I would recommend to anyone

Definitely, Bubbl.us is the simplest way to make mind maps. I like this tool because: - It runs entirely online. - It allows making a colorful mind maps in minutes. - It allows rearraging the map using different layouts with a single click.

As mentioned in the title, it's free and easy to use. I've created mutliple mindmaps with this product and it's easy enough for anyone to adopt.