http://feedproxy.google.com/~r/ChemtrailsKillRadioTheTruthDeniedChemtrails/GeoengineeringGmo/~3/74gPpA8oYk4/huge-red-x-on-google-earth-over.html I'm guessing it's a marker for an issue in the software that needs addressing and has gone out to the live environment. Like a comment in code saying "fix this bit". Completely plausible and logical. www.thetruthdenied.com