About the New Yahoo Messenger Version?

I have two ym chat mates who are using the new version. When I want to chat with them, a message comes out that they are using a new yahoo version which has different features. Does that mean that i can't communicate with them? The messages i sent they will not be able to read?
If so, how do i go about updating my yM? What is the advantages of importing the new version?

3602007-10-11T06:26:25Z

Favorite Answer

Click the link below to download the most recent version of Yahoo! Messenger:
http://messenger.yahoo.com/download.php

Click the link below for detailed information about the most recent version of Yahoo! Messenger:
http://messenger.yahoo.com/webmessengerpromo.php