Heard about this on the radio today. A research study of selfies in 5 cities worldwide - analysing trends & patterns. Sounded pretty neat on the radio & will have a look around their site.
Have a look for yourself if interested: http://selfiecity.net/
That really is very interesting, thanks for sharing Laura. My only observation is that the team that put it together is mostly made up of men and from my experience men are notoriously bad at estimating ages so not 100% sure about that aspect! I love how the people in New York look like a combination of the people from all the other cities and that those is sunnier places smile more!
@paulaw you're right - although I did hear they used computers to so some analysis parts (not sure which) and then a human checked to make sure the computer's data was reliable.
Have a look for yourself if interested:
http://selfiecity.net/