Yahoo! Messenger 9.0.0.1389 Beta

Use Yahoo! Messenger to call and talk over the Internet just like you're on the phone. All you need is a headset, or a microphone and speakers. It's that easy - just click the Call button. If no one's there, leave a voicemail! You can also get much better sound quality than regular phone lines. Try it out - you and your friends will really hear a difference. Find, add, share friends... It's easier than ever to add and invite friends to Messenger. You can even send your contact information to a friend's Address
Book.