Hi there, I am the author of the blog post. I will be happy to answer any question.
It would be interesting to see the volume of visits by government office year over year. I have a feeling that periods around elections might look very different. Also would be interested to see distribution color-coded by industry. Mining and contracting should pop up for certain time periods and government agencies.
Or maybe that can be implemented in Manolo's GUI. It should not be difficult as it is based on Django.