Just completed an entirely unscientific look at the data - I checked the UDID's of the iPads we have registered here (at a large financial company in the UK) and none are in the list. Given that this is 1m of 12m records, what ratio is 12m of the total population size for iphones and ipads?
i.e. if I checked 20 UDIDs, none of the came up, can we say that (allbeit with a low degree of confidence) the sample does not include UK registered devices? is it just USA registered devices? has anyone outside of the USA seen their iPad/iPhone on the list?