From the post:
TraceMedia, in collaboration with the Oxford Internet Institute, maps language use across Wikipedia in an interactive, fittingly named Mapping Wikipedia.
Simply select a language, a region, and the metric that you want to map, such as word count, number of authors, or the languages themselves, and you’ve got a view into “local knowledge production and representation” on the encyclopedia. Each dot represents an article with a link to the Wikipedia article. For the number of dots on the map, a maximum of 800,000, it works surprisingly without a hitch, other than the time it initially takes to load articles.
You need to follow the link to: Who represents the Arab world online? Mapping and measuring local knowledge production and representation in the Middle East and North Africa. The researchers are concerned with fairness and balance of coverage of the Arab world.
Rather than focusing on Wikipedia, an omnipresent resource on the WWW, I would rather have a mapping of who originates the news feeds more generally? Rather than focusing on who is absent. Moreover, I would ask why the Arab OPEC members have not been more effective at restoring balance in the news media?