YAAK

YAAK is a free application that was designed to edit your Windows registry to change the Yahoo! Messenger advertisements YAAK is a free application that was designed to edit your Windows registry to change the Yahoo! Messenger advertisements. This application does not scan any registry settings nor send any information anywhere. It does not need internet access and it does not modify the Yahoo! Messenger application in any way.

The creator does not guaratee that every ad will get blocked, but most of them will. As with any registry editing tool, you are using this at your own risk and can not hold the creator, PS Software or its members responsible for anything for using this application.

Usage:
You have 2 options, you can just kill the "chatroom only" type of ads or all of them. Just click the appropriate button.

Default:
You also have the option to restore back to have the ads again.