I use MSN & Skype. MSN is better & easy to use. Lots of my chinese friends use MSN to chat with me. :)

MSN only

I use msn, yahoo and skype. They work in quite similar ways and you can chat and have voice chats on the 3 of them. Msn is quite unreliable and you often get disconnected. Skype and yahoo are fine with yahoo being the most reliable. As I have said in another post it is better to have at least 2 so that you can swap from one to the other if the communication gets broken. I have never tried QQ. Sophie.

i think ,MSN is the best tool to communicate .its easy to understand for all i think QQ is specially for chinese people or who know chinese or related that but MSN is good for all

To me, MSN Messenger is the best because it has lots of facilities making the communication easy and fun.