I don't understand all this blabbering about mind mapping and what's
wrong with it - probably I'm the only one not on pot in this thread...

But FWIW, my mind-mapping tool is made by Moleskine
(http://www.moleskine.com/eng/default.htm). The only required plug-in,
called a lead pencil, is also avaible in the better office supply
store (probably even in the worse office supply store, but being an
outright snob I never visit it, of course).