User blog comment:Penguin Scorn/A Quest For The Lost Mixamajig-MIXELS WIKI EDITION/@comment-28826570-20151103234154/@comment-24926943-20151104143936

Here's the info I got about Premium Rooms(half a dollar a day) A Premium Room gives the best possible chat experience for all visitors: Faster updates and no timeouts. Messages appear faster and you (the administrator) decides when/whether visitors should be sent away automatically.
 * Unlimited number of visitors. In free rooms, the number of non-subscribers is limited to 10. In Premium Rooms, there is no limit to the number of people in the room.
 * Private messages. If you allow it under Room Properties, visitors can send/receive unlimited private messages to you and/or other visitors.
 * No advertisement. A clean chat without banners or promotions.
 * Complete chat history. All visitors can access the entire chat history (not just the last 10 KB). The administrator can even recall deleted contents.
 * Moderation option. You can promote visitors to Room Moderators.
 * Room Board. Administrators and Moderators can control the area above the chat called the Room Board.
 * Custom room URL. The room administrator can choose a permanent room address like: chatzy.com/YourName.
 * Secure HTTPS connections. Everybody can access the room 100% privately, using unbreakable 2048 bit SSL encryption.
 * Hosting on your site. If you want, you can embed the room on your own website or blog in your own design and without Chatzy logos ("white-labeled").