The very nature of WebFinger is experimentation.
This means we are likely to see implementation before a fully baked specification. Since at the moment the various bits and pieces of the protocol are somewhat scattered across multiple drafts, this post will attempt to provide a quick implementer guide for those looking to jump right in and get something working.
Actually, I don’t have a well-thought, proven, and complete case to make.
What I have instead is some loose consensus from a small group of people and a lot of experience trying other ideas. Historically, this is a bad way to start a discussion about new URI schemes. Getting consensus for new URI schemes is often more difficult than solving American healthcare.
The proposed ‘acct’ URI scheme is designed to identify an account. ‘Account’ is a pretty straight-forward concept. It is some sort of identifier – a string – that is specific to an authority – usually a server or domain. For most people, their account is also their email address, and in recent years, the emphasis on email has surpassed the concept of an account. When I started using the web 20 years ago, I had an account on a server. It just happened that this account has a mailbox associated with it.