Face books use case is a pathological case from universities back when a 10MB hard disk cost more than a professor. Universities do reuse email addresses but that's policy not need - and even universities can change policy.
Username is horrific as a global identifier - I hate easily.co.uk every time my browser cache gets cleared.
Adding new addresses to an account works and really ISPs ought never reuse emails. A new RFC perhaps?
Username is horrific as a global identifier - I hate easily.co.uk every time my browser cache gets cleared.
Adding new addresses to an account works and really ISPs ought never reuse emails. A new RFC perhaps?