The Google banner ads generate Danish Kroner for Frederik Magle for each mouse click. The banner ads are able to ascertain your local region. They have been around for several years ... they went away shortly after the server crash a year ago, but were re-instated about four months ago.
None of the banner ads are supposed to be offensive. ... If there is one, please let us know, giving as much detailed info as possible (including the URL) so we can relay that information to Frederik. He can the contact Google and make the changes.
The two forums (MIMF and Talk Classical) are not cheap to run by any means considering the domain licensing, the licenses for the forum software, and of course the hosting service and the lease of the servers.
Frederik is not making money on these ... the revenue generated by the Google banner ads just about breaks even with all the costs associated with running the forums. Every little bit helps, these days.
But know this: Frederik is very committed to keeping his forums running, no matter the cost ... Both forums are his pride and joy ... and I know firsthand that he dearly loves them and will do anything humanly possible to keep them operating.