Lifehacker have a great, short, introduction to Mind Mapping as technique to for making meeting notes. It’s something I’ve found useful but seen few doing. Sometimes I use MindManager in the meeting but often it’s just a pen and paper, still using the map format.
The advantage of a map is, with few words, it can capture relationships between ideas that linear format notes can’t show. It’s also far more flexible allowing topics to grow as the conversation flows. Additional info relating to an earlier topic can be linked with a line irrespective of it’s location on the page.
While this isn’t “pure mind mapping” my hand maps tend to be very unstructured and often break the “rules”. While the purists may disagree I think you should concentrate on capturing the information rather than worrying too much about structure. I find they are still meaningful, and readable, in spite of my appalling handwriting 
Note Taking: A Beginner's Guide to Mind Mapping Meetings - Lifehacker
Do you have trouble keeping up with meetings because you can't take notes as fast as the speaker talks?If you do jot down some thoughts and ideas, by the time you re-read your notes they make no sense? If this sounds like you, a meeting mind map may be just what you need…
See how Mind Mapping helps me cope with information overload in this post from last year:
Taking Note of Autodesk University - Mind Maps to the rescue?
