This is an infographic from mint.com showing Year over year percent change in properties sold. The first graph shows the change during quarter 3 between 2008 and 2009. The second graph shows the change during quarter 4 between 2008 and 2009. The data shows that the Q3 change was quite bad, but Q4 has a much better outlook.
This graphic is very visual and relies on little text. The usage of color will be a problem for as much as 10% of male viewers, especially since the graphic primarily uses red and green colors. There is no supporting data on the graph and the differences in colors will be hard for color bind users to see. A second, but more minor problem with this visualization is in color similarity/grouping. The green shown on Kentucky will be perceived as a slightly different color than that of New Jersey. I think the white borders used will help alleviate this problem, but it is still something that should have been taken into more consideration by the original designers of the visualization.
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