Measuring Diffusion through errors

"Fabrizio Gilardi":http://poliscizurich.wordpress.com/2011/01/04/diffusion-everywhere-dumb-and-dumber-edition/ In an "article":http://onlinelibrary.wiley.com/doi/10.1111/j.1468-0491.2010.01501.x/abstract on national tax blacklists recently