If you mean how rooms are displayed in the browser sections, rooms are organised by how many registered users are in a room, but if a room has more token holders they are displayed higher than others.

For example:

Room A has 1000 users, 100 registered users & 50 token holders

Room B has 900 users, 90 registered users & 75 token holders

Room B appears higher than room A as theres more token holders than Room A.