[bbondy]

Actually you are seeing what you want. The social media stuff is about a related study for mining the social media links for top users and not for the expected age study. The expected age study was for all users that have an age in their StackExchange profile.

[dbdoug]

I would be interested in seeing an age profile. I, for one, removed my birth date after being flamed about my age. I've been programming since 1962 :)