Mainly MSN, because I think it's the most professional of the messengers. It's reliable, fast, and organized. And it has fewer ads and better games than AIM or Yahoo.

Wow... really suprised to see most people use msn... I use AIM, because lots of my friends use it.

I mostly use AIM because most of my friends use AIM, but occasionally I use MSN.

i use yahoo because all of my friends use yahoo. it wouldn't make sense to use another messenger service

msn, but too lazy to chat with evryone.

I use MSN Messenger 4.0 for IBM 350 (80486) run in Windows 95B and MSN 7.1 (Private release only) for my P4 System <currently running in Windows XP Pro Sp2 ((5.1.2600.2158))>. I use E-Messenger (available through www.e-messenger.net) for get through my school firewall.

Lingshen

Jabber whenever possible, but most of my friends are on AIM so I tend to have to use that instead.

I use all of the above. I run the MSN client, just because I like it and use it the most. WHen I'm feeling talkative, I open up Trillian and run all the others (sans-MSN) just because I don't like removing all the crap that Yahoo and AIM dump all over my system.

Errm I use Regnessem so I don't know where that would fit in umm it has plugins for AIM, MSN & YIM so you can use all 3 accounts at once.. I think =/

I use MSN everytime eventhough I do have an account on Y!M and AIM. And eventhough I do have alot of friends and family using Y!M and some using AIM. I just got used to it and I have more people to talk in there........

I use MSN Messenger, add me if you want to talk with me. I just love meeting new people!

I use Yahoo messenger because my computer is a jack@$$ and wouldn't let me download AOL my friends had to download Yahoo just to talk to me..... I'm so loved!!!

i use yahoo to talk to my friends mostly

msn 7.0 final version + msn plus... tweaked it so the ads don't show up... teeheee <3

Yahoo, because all my friends use it. It's easier to communicate with them that way.

AIM coupled with Aim Ad Hack

I use MSN. Most of my friends use it. I haven't tried the other ones except for Yahoo, which I didn't like.

i use trillian.. msn and icq

I use AIM the most because I know more people on AIM, but Yahoo's doodle pad comes in handy when I need to help friends with math homework.

I use MSN always, before I used Yahoo but sometimes my PC don´t support the ym!....

MSN, AIM occasionally.

m using Yahoo messenger...

MSN messager....

Great to see, i have just started using MSN again now that version 9 has been released and due to the fact I now have a webcam and trillian basic does not allow video streaming, other than than trillian is great.