We should be able to detect whether the makeup of traffic for all projects or maybe just en.wikipedia has considerably shifted. This could indicate several things:
- network wise we have a problem serving a particular location
- there is blockage of traffic from a country
- traffic is flowing into a country that did not before
The more targeted that the measures are the more useful they would be so entrophy measures on "desktop" english wikipedia are likely to be more useful than in "overall" projects.