Recent changes (July 26 2024):

Only registered users with verified emails can create rooms.
Reporting rooms is only available for registered users. Reporting files remains available without registration as before.
Room admins can create polls. These polls will be sent as notifications to room members for participation.
Room admins can pin a comment to draw users’ attention. For example, they can post the room rules as a comment and pin it.
Performance of loading rooms with many images has been improved.