jim, got the email too as i have an AOHell account, what it says is that if you use a client (eg MS outlook) to read and access your email, you need to adjust the settings in order to archive emails as AoHell wont be storing them on their server ad-infinitum as they do at the moment. ie they will be deleted after 30 days.
for me, the email makes no odds as i do this already and archive all my emails and have done so since 2003 through my aol hell account and business server.
if you just discard emails after reading then you can ignore, if you like to archive then you have to set a rule in the client to copy emails sent and recieved to be copied to a file (*.pst).