Very neat. The warnings about it not being very secure are of course spot on. Seems that the need to embed the api key on the page is a security problem of one sort.
The call to gpsbabel seems secure thanks to the sanitisation done to the filename passed to gpsbabel.
I probably won't ever add this to ikiwiki, but it's a great third-party plugin!
Can this plugin be extended to allow the user to switch the displayed to many available maps, similar to the functionality provided by OSMify which allow replacing maps with one of the OpenStreetMap renderings. --