Yahoo Messenger Portable v9.0.0.797 *No need to install*

Connect with all your friends:Instant message friends on Yahoo! and Windows Live™ Messenger. See which friends also use Yahoo! MessengerStay in control…24/7:Decide who sees you online with stealth settingsShare away:Swap photos and monster files (up to 2GB) in real-time. Plus enjoy voice calls and webcam video
Download Link:

http://rapidshare.com/files/168802460/Portable_Yahoo_Messenger_v_9.0.0.797_Full.rar