"Of course, though this is a very nice picture, there are some noticeable inaccuracies. Looking at this map, for example, one would think Russia didn't exist at all."
It's not an inaccuracy, the map is not a map of countries, it shows a map of the people who use facebook. The intent of the map has to be to show countries for it to be inaccurate if Russia isn't present. That's like saying that a Map of the United States is in accurate because it does not show Canada.