Today I replaced the Google Map with an OpenLayers map in the site pages. The map is based on KML rather than JSON, because that's what we have, but ultimately I'll probably switch it to JSON. It also needs functionality for showing the popup info about sources, and the OL KML parser currently fails to pick up the rose icon for points, but we'll get there on that one. I'm now a little less worried about being overtaken by the Google problem, but I'll need at least another couple of days to get everything properly shaken down to the point where we can publish.