MindMapping is a multi-purpose tool: It can be used for solitary brainstorming, but most of all it's an alternative notation to conventional writing, paralleling PhotoReading which is an alternative to conventional reading.
For example, I use MindMapping if I have to write the protocol of a meeting. It is faster, so I can participate myself; it is shorter, so I have less paper to carry; it is non-linear, so I can add arguments/points if the discussion jumps forward and backwards through the topics.

I found that MindMaps help me to remember more about topics.
Exmample: Lately, I discovered an old MindMap (pre-PhotoReading) of a book about non-verbal communication. After only a few minutes, my old color code came back to me, and I could remember an astonishing amount of what I read - and I only worked through the first half of the book during one night watch I had. I brought the book back to the library and put the MindMap aside for about three years.
Isn't this great?

Jens