The map was generated using continent-level shapefiles (I believe from here: http://pubs.usgs.gov/of/2006/1187/basemaps/continents/ http://pubs.usgs.gov/of/2006

The map was generated using continent-level shapefiles (I believe from here: http://pubs.usgs.gov/of/2006/1187/basemaps/continents/ http://pubs.usgs.gov/of/2006/1187/basemaps/continents/). We stuck with continent-level outlines because adding country boundaries would have needlessly complicated the SVG, and borders can sometimes be disputed and controversial things :) It would have been nice to have the great lakes and caspian sea, because they're such large features but with a team of two webdevs, some things have to wait until version 2.