What is interesting is, if a few person in the graph start identifying themselves on their profiles. Then there might be a way to identify the others in a pictu

What is interesting is, if a few person in the graph start identifying themselves on their profiles. Then there might be a way to identify the others in a picture based on his nearby graph, other attributes(like gender + common friends). Others have already shown how easy is to de-anonymize a social graph from public datasets[couldn't find the relevant paper]