Netizens:

Crispin & Gregory's new book, /Agile Testing: A Practical Guide for Testers and
Agile Teams/, has a kewt "mind map" at the start of each chapter. It inspired me
to find a way to use the "tag cloud" on a blog to draw a mind map of the posts,
linked by their tags in common.

The result is this little project:

http://broadcast.oreilly.com/2009/02/merb-mind-maps.html

It showcases...

- graph theory - including Minimum Spanning Tree
- GraphViz - to typeset the mind maps
- Merb - a Rails-style website platform
- Ruby - that annoying language that won't go away
- RSpec - a Behavior Driven Development system
- transparent PNG files with ImageMagick drop-shadows
- assert{ 2.0 } - an assertion that reflects its expressions
- assert{ xpath } - the latest version of my assert_xpath system
- TDD for algorithms & graph theory!
- fixture-dependencies - a Rails fixture clone with more features
- GraphvizR - a lite Ruby gem that wraps GraphViz dot notation
- and even a tiny bit of HAML!

The algorithm itself depends on none of those things, so any blog could use the
algorithm to present the mind-maps that are already latent within it!