I think there should be an option for non-pro users (like myself) to see the age of the account they are currently using. This is a feature that should be readily available to all people to get a gauge of how long they have been learning their language/languages.
This may be a guide but cannot take into account any learning they may have done elsewhere on the same subjects. I use several different sites for my learning as some help better in some ways but not as well in others. My view is the trainee gets more experience by learning from more teachers
I am thinking about closing a credit card account or two and wondering how it might affect my average account age and therefore my credit score in official site