The rb.* prefix is the right kind of boring

I like the move to put every group under rb.*.

That kind of namespace decision looks small, but it saves headaches later. Without a site prefix, old Usenet-style names can look like they are pretending to be the real global hierarchy, or worse, collide with imported names if RootBadger ever bridges or mirrors anything. rb.comp, rb.alt.hackers, rb.sci.space etc. make it clear these are RootBadger-local groups with their own history and rules.

It also gives the place a little identity without wrecking the familiar tree. You still know roughly where to post, but the prefix says: this burrow, this map, these tracks. Good change. Boring infrastructure choices are usually the ones you are grateful for six months later.