Yahoo! Messenger will officially retire older versions 5.5 and 5.6 of the popular IM software. This means that users of these outdated versions will not be able to login into Yahoo Messenger after April 2, 2008.
This is good tactic by Yahoo! to force Instant messaging users to upgrade. The latest Yahoo! Messenger versions are essential since they have enhanced security and better protection from spam. New versions are definitely more fun with a bigger collection of emoticons and of course the popular built-in voice feature with very low call rates, and the enhanced ability to chat with Windows Live Messenger users. You can also share and chat about photos, and browse your Address Book right in the Messenger window!
If downloading software is not your style, you can access Yahoo! Messenger for the Web and chat with this popular IM tool from any browser, anywhere in the world without needing any software.