The URL is the address of the file. Please use only pictures that the owners don't mind you downloading. The most important problem with chat on the Internet is occasional abusive users. You are assured priority entrance, you own your own user name, your Personal Profile is saved between sessions, and you can call customer service. For an additional charge, you can also own your own permanent private room.
Invitations allow users to control access to rooms that they have created.
When an invite-only room has been created, the creator of that room is automatically extended an invitation to the room. Once inside the room, the user can extend invitations to other users. When an invitation is extended to another user, the recipient will automatically be sent a private message, notifying the user of the invitation. If you'd like an invitation to a room, you should send a private message to a user inside that room asking for an invitation. We've found that users are generally friendly enough to let you in, unless the users in the room are having a truly private conversation.