Hi @masterswatch, @Worldmappin and @louis88, here is an idea to get some money for the worldmappin project:

I am an owner of a flat/apartment in the Eifel (Details).
I would give some HBD regularly, for showing my apartment (lets say in another colour than for the travel posts) on worldmappin.com
I am sure, we find other hotel- or apartment owner, who would love to have a pin in your map and would pay for it.

Regards, Achim