@Cy re:circles that is what "private-groups" will do. Since ssb is pull based, the only way to restrict what other people can see is to use encryption. I'm gonna start on these encrypted groups once user-invites is ready (this friend graph thing being the last major part of that)

@mix yup, also a visualization that explicitly shows weights as lengths excludes negative weights because you can't have a negative length! Also, note: undefined is not a valid json value, so we want to avoid using that in a thing we will want to serialize.