How to chat as we used to do years ago on IRC, ICQ, etc.
The Application used on mac is Messenger that has replaced iChat.
1. Open “Messenger”
2. Choose: Menu: “Preferences” then choose Tab: “Accounts”
3. Click: Add”(+)” and setup below
Account Type: Jabber
Account Name: [Your_Facebook_Username]@chat.facebook.com
You’ll find your username on openin your facebook account, your browser will display the following URL : https//www.facebook.com/Your_Facobook_user_name
Password: [Your_Facebook_Password]
Server: chat.facebook.com
Port: 5222