Just FYI, the only additional data used by the GoogLeNet entry was from the classification challenge (aka provided by the organizers), hardly something that would make you lose sleep at night.
I was not suggesting Google was pulling data from other sources in some sort of conspiratorial way, but rather pointing out for interest that its algorithmic superiority was weighted toward large data sets. Given the volume of data they see and store in their existing operations, I saw that as a potentially interesting correlation.