- How to describe a rating service and the rating system it
uses. More technically: how to write a schema describing the kind of
statements that can be made.
- How to find labels for information, and the format for those
labels. Trust comes from knowing what is said.
- How to sign those labels. Trust comes from knowing who
said it.
- How to distribute preference settings based on the labels. Trust
comes from having rules for deciding what to trust.
