Ha! I started a topic for the first one - have just merged it in as a comment of key quotes.
Thanks @pfrazee.com for the write up!
This sets up our initial requirements for private data in AT: we want to handle personal-private and shared-private data; We do not want to increase the operational or resource costs of the PDS; we don’t want to sacrifice generality; and we need applications to sync the private data.
On Personal Private:
The “personal-private” storage is unshared private data. It’s useful for state like preferences, bookmarks, and drafts. It could also store documents, notes, pictures, TODOs, and any other kind of data a user might want to keep in their personal server.
On Shared Private:
The “shared-private” storage is for data which is multi-user but non-public. Some common use-cases include posts, user lists, videos, documents, DMs, and basically any other kind of artefact or experience in social or productivity software.
Everyone should read the whole thing!