If you get an e-mail telling you that your password will expire in 3 Days or some such, it is not from us, it is a phishing scam trying to get your login credentials here.
We do not use password aging here. On sites that do use it, I tend to choose bad passwords since I’ve got to think them up on the spot and have them be something memorable, and I think that is the case for most people, others probably write them down where other people can get them.