With Google, I see that others also have this problem.
This happens to me both under Windows (after AdAware and SpyBot cleaning), and also when I boot Mandrake Linux, so I can safely assume it’s not some malware on my machine.
GaWd kindly found this text for me from the landover site:
Clearly satire, but also clearly they know this is happening, since they mention “people offering to pay to take surveys”. And FWIW, I’m not a foreign visitor, I’m in Florida. (make your own Florida joke here)
What is actually happening here? None of my Google findings explained it.