Pidgin with gmail and facebook configured

1. Installing pidgin on ubuntu is easy, run the following command

<someuser@someMachine> sudo apt-get install pidgin

2. Setting up Gmail account

https://support.google.com/talk/answer/24073?hl=en

3. Adding facebook to pidgin 
http://www.howtogeek.com/howto/12527/easily-add-facebook-chat-to-pidgin/

4. Checkout how to disable those pidgin notifications
  http://www.howtogeek.com/45932/how-to-disable-pidgin-notifications-in-ubuntu/