A personal CRM should be federated. I shouldn't need to keep my friend's contact details up to date manually. If they run a digital address book of some kind, m

A personal CRM should be federated. I shouldn't need to keep my friend's contact details up to date manually. If they run a digital address book of some kind, my software should just ask their software for the latest data and subsequently update my local data. This should be an open protocol like email or calendaring.