1. one day people will indeed live on the moon and since some have already claimed to have purchased land on moon (al these land on moon talks), advetising method need to be widened.
2. there are other intelligence life forms out there and if advertisements in some high tech form can be sent to the moon, those ads can be detected by those other life forms.
"Yeah of course"
"Do you think everything will be same up there as on the Earth, with internet and businesses and stores and KMK blogs?"
"I guess so. Advertising on the moon is possible"
"True true. Moonvertising heh?"