McCain and the dangers of "the Google"

This is great - from Scout Finch (a name from "To kill a mocking bird") on Daily Kos:

A lot of RNCC viewers were perplexed last night when McCain appeared from the light of the Obama logo, strolled to the podium, and began his lackluster speech before an enormous green screen. We'd seen that lime green screen before and thought McGrinch had learned his lesson -- it was not a good look for McCain and was widely panned by pundits and the public alike. So, why would he choose that hideous background for the biggest speech of his very long political career?

It truns out that the green was the grass from a picture, if viewed from a distance, showed Walter Reed Middle School in Hollywood, California. Further investigation reveals that this may be a mistake that Walter Reed Medical School was the intended object of the photo.