Pidgin is an popular free chat client.It’s easy to use,you can connect to AIM,Yahoo,MSN,google talk,and more chat networks all at once.

To install Pidgin,first edit /etc/apt/sources.list by :

sudo gedit /etc/apt/sources.list

Add follow two lines to the file,then save and close the file.

deb jaunty main
deb-src jaunty main

Add GPG key by following command

sudo apt-key adv --recv-keys --keyserver 67265eb522bdd6b1c69e66ed7fb8bee0a1f196a8

Update and install pidgin:

sudo apt-get update

sudo apt-get install pidgin

click here to install Fonomo plugin for pidgin,which can extend the popular Pidgin instant messenge to support video.