Coordinates: An Online Journal of the Map and Cartography Round Table, American Library Association is a dead blog — the last post was made in 2010. That’s unfortunate, because they had a good start on publishing interesting articles. Here are two that I found useful:
A Mirror of Our World: Google Earth and the History of Cartography points out how notions of Western cartography influence Google Earth’s design. It also discusses its technical limitations and some of the techniques for addressing them. (Hint: rubbersheeting isn’t a summer camp prank.)
Mapping under the Third Reich: Nazi Restrictions on Map Content and Distribution talks about the limitations imposed on German cartographers during that period, partly for security but also for imposing a unified political and cultural view (e.g., place names).