Better geo-location is needed. While language as a location
proxy works well in some cases, as we have demonstrated, it is
inherently weak. In particular, it is implausible for use at a finer
scale than country-level. What is needed is a hierarchical
geographic aggregation of article traffic. The Wikimedia
Foundation, operators of Wikipedia and several related
projects, could do this using IP addresses to infer location
before the aggregated data are released to the public. For most epidemiologically-useful granularities, this will still preserve
reader privacy.