Great post. I recently took a snap shot on my phone of a radar plot like this for my "bad data visualizations" collage. It measured 10 different quality characteristics against goal for each. There was a line for the goal, and and a line for the actual, and then the area between them was colored green/red if they were over/under goal. And it just looked a mess. Since there was no logical ordering to the quality characteristics, I think the area was largely influenced by the ordering they used. Anyway, the happy part is I didn't know until now that there was a name for this sort of plot. I appreciate the introduction so I know how to label it if I ever do make that collage. : )