Yahoo! Messenger Ads can get really irritating at times. From time to time it changes Ads wasting our precious bandwidth. One of the easiest ways around this is to remove them using Y.AddsRemover.
To remove all Yahoo! Messenger Ads just start the program and click ‘Select All’ and then ‘Remove Selected Ads’. That’s it. You can now enjoy an Ads free Yahoo! Messenger
Update: Since the orginal link to the software is not working.