The difference is that other photo sharing sites don't hold a huge amount of behaviour and associative data about you. To put it in a context you have to consi

The difference is that other photo sharing sites don't hold a huge amount of behaviour and associative data about you. To put it in a context you have to consider the fear involved when countries like China have already been caught breaching Google systems. It might not mean much to us westerns as generally we aren't afraid of your government and it has at least they have some due process. Many totalitarian governments don't and from what the media spread they aren't afraid to arrerst everyone you associate with as well. You can pretend that it isn't happening, but it is, and china isn't alone. Processes like this lead to industrialised abuses of power and perseuction of innocent people that have may have signed upto services without considering the full impact of just being snapped in a photo with someone else they barely know... and what evidence do they have this person is guilty? well like any normal person they probably read up on the news, where shocked about a few things, and all of a sudden you can pull items out of context and have a history of being involving with undesired behaviour.