TinyChat is FREE service which allows you to create chatrooms easily. You don’t need to register for the service and no software is required to download for this.
To use this service, just visit TinyChat.com and click on the “Create New Chatroom” button. A new chatroom will be created and its URL will be avail to you. Now, you can enter the room and begin chatting with friends.
You can choose a nickname or can sign-in with your twitter account. To invite your friends, you need to share the URL of the chatroom with them. TinyChat doesnot have any option to send direct invitation to your friends.
You can see all online members. Moreover, You can save your chat log for future.