Configure Pidgin . Do Ctrl+A to open the ‘Accounts’ window, then ‘Add’. On the ‘Basic’ tab, select the XMPP Protocol.
Username: Your Facebook username
Domain: chat.facebook.com
Resource: Pidgin
Password: your Facebook password
Local alias: Alias
On the Advanced tab, then enter the following:
Connect port: 5222
Connect server: chat.facebook.com
Uncheck ‘Require SSL/TLS’
You’re now set to use XMPP ‘Jabber’ with Pidgin