Linux has a lot of free and quality applications. If you are looking into installing and using a instant messenger app then you should try out Kopete. This application is comparable to MSN messenger or Yahoo messenger. The good thing is that you can connect to a lot of other services. Kopete will allow you to connect to MSN, Yahoo, Gadu Gadu, ICQ and others. It also supports video. So once you installed Linux and need an instant messenger to stay in contact with your friends, remember Kopete.