Other mapping tool ideas

1. Here's a cool site: paste in a page of text or so and it makes a 'tag cloud' of it. http://www.wordsift.com/ is also will give a vocab/meaning map of any selected (or typed in) vocab word.  Very cool.
2. http://www.visuwords.com/ is the page I had been looking for.  This tool has 2 biggies-- it is has the cool 'wiggle-factor' and it gives more info by the color of the word (green is verb for example) and the links are also coded by shape/color to show part of/kind of relationships. Looks like the software that powers the site is related to this: http://www.apachefriends.org/en/xampp.html however that site is referenced here: http://www.linux.com/archive/feature/114337 though that is an older page.
3. This looks like #2 above but isn't so open/free: http://www.visualthesaurus.com/ though it seems to use the same wiggle-engine.