[geoduck14]

I'm betting you are right. It may be that they sold aggregated data, and that they aggregated based on factors that might have been too granular in some situations.

Perhaps something like "all users who are in the UK and logged in last Sunday morning". Something like that could have been a pain to sess out for each instance of data sharing, in addition, if you "settle in court", you can also set court-approved definitions of what "anonymously aggregated" means.