Do you want to be the person who has to explain why your userbase just dropped 20% because you didn't want to ban porn? If Apple says you want to ban something, it's getting banned. "Globally" is also not a good metric here, since the vast majority of tumblr users came from english speaking countries.
In the local galactic supercluster it might be less than 0.1%, but Tumblr happens to be predominantly used in the US, and that's what matters to their business.
Which one do you think it is, considering both the functionality of the program and the high possibility of the author not being a native English speaker?
For millions of people 'dato' simply means 'date', as in day of the month.
