This raises some very interesting questions about the increasing artistic use of services like Instagram. To the best of my knowledge, toplessness is legal in New York, both for men and women, and the photograph is pretty obviously non-sexual. So is a blanket ban of nudity a sane approach for a major photography sharing network to take? Facebook certainly has a similar stance, but the likes of Flickr and 500px are far more open, instead making use of age-barriers. If Instagram continues to grow in size and prominence, will they continue to completely avoid nudity, even given the long and storied connection between the nude form and photography.