This is a Facebook chat plugin for Pidgin and libpurple messengers.

This is how you can connect to Facebook Chat:
Create a new account with these settings:
- Protocol: XMPP
- Username: xyz 
  (username on your FB link, example: https://www.facebook.com/xyz)
- Domain: chat.facebook.com
- Resource: Pidgin

On the advanced tab:
- Connect port: 5222
- Connect server: chat.facebook.com