I have suggestion for another chart someone may be interested in creating. A time series of such images. It would be even more awesome if the traces all the movements are depicted in a single image like a snake.
(You haven't provided raw data, so I'll take an example from the raw data Drew Conway posted.)
The range in rank value for the stackoverflow tags is from 1 to 56, but the range in "# of Tags" that rank is based upon is from 0 to 82,923 and the data is so skewed that only 11 of 56 languages have above average "# of Tags".
Most spreadsheets will provide easy to use functions to calculate the mean, standard deviation, and normalized scores (STANDARDIZE in LibreOffice).
Please plot normalized data not rankings.
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Similarly, the range in rank value for the github "# of Projects" is from 1 to 56, but the range in "# of Projects" is more like 0 to 104,239!
http://www.r-chart.com/2010/08/github-stats-on-programming-l...
The horizontal axis would just be popularity.