Not sure about that. People tend to stick with an email address - after they sign up, it is a lot of effort to change it. They need to re-register for things,

Not sure about that. People tend to stick with an email address - after they sign up, it is a lot of effort to change it. They need to re-register for things, etc. I'd say the primary component is, how did they sign up for their first email address. If you used the internet in 1998, you probably used comcast or AOL, and were offered an email address during signup. A lot of young people switch between school or college addresses as their 'work email'. Home use of the net is likely to be via a mobile phone a lot of the time, and they will choose an account with a nice iphone / android ap.