There are two dimensions along which we can measure a user's connection with or position in a room. One is the user's long-lived affiliation
with a room -- e.g., a user's status as an owner or an outcast. The other is a user's role while an occupant of a room
-- e.g., an occupant's position as a moderator with the ability to kick visitors and participants. These two dimensions are distinct from each other
, since an affiliation lasts across visits, while a role lasts only for the duration of a visit. In addition, there is no one-to-one correspondence between roles and affiliations; for example, someone who is not affiliated with a room may be a (temporary) moderator, and a member may be a participant or a visitor in a moderated room.