Yahoo! Messenger - Instant messaging allows you to quickly exchange messages with your online friends. Unlike e-mail, instant messages appear as soon they`re sent. By downloading the Yahoo! Messenger application to your computer, you can send instant messages to other people from around the globe, send them files or have a voice conference.
Other features include voice chat, file transfer, mail and stock quote alerts, sports scores, news, and much more.

Photo Sharing:
· Drag-and-drop photos into your IM windows and talk about them like you're there.
LAUNCHcast Radio:
· Make your own radio station and listen to music you like!
Yahoo! Games:
· Challenge your friends to classic Yahoo! Games in the IM window.
IMVironments:
· Use interactive themed backgrounds in your IMs.
Find, Add, Share Friends:
· Easily get connected with the people who matter most.
Yahoo! Search:
· Search from your IM window, and get results both you and your friend can see.
File Transfer:
· Drag-and-drop files for real-time sharing and instant notification that they've been received.
Address Book:
· Synchronize all your contact information.
Stealth Settings:
· Make yourself appear online to some and offline to others.
Audibles:
· Let these animated characters say it out loud for you!
Emoticons:
· Express your feelings with these animated smiling faces.
Yahoo! Avatars:
· Represent yourself with a stylized graphical image.
Display Images:
· Select an image to represent yourself to your friends.
Skins:
· Select new visual designs or disable them altogether.
Voice:
· Make free worldwide PC-to-PC calls and enjoy great sound quality and voice mail.
Take Yahoo! with You:
· Stay connected to Yahoo! Messenger on your mobile phone.
Webcam:
· Share live video with friends and family around the world.
Conference:
· Exchange text messages with multiple people in one IM.

What's New in This Release:
Invite your friend to play a game:
· In addition to instant messages, text messages, voice and video calls, you can now play popular social games such as Mafia Wars and Fishville right within Yahoo! Messenger.
Keep up with friends wherever they are:
· View, comment on and like updates from Yahoo! Pulse, Flickr, Facebook, Twitter, and more, all from right within Yahoo! Messenger.
Post one status to multiple social networks:
· Share your Messenger status simultaneously on Yahoo! Pulse, Facebook, and Twitter.
Chat with Facebook friends:
· In addition to your friends on Windows Live, you can now IM your Facebook friends. Continue your conversations on the go using Mobile Web Messenger, SMS Messenger or Yahoo! Messenger App for Android.
Always be available:
· Stay signed in to multiple PCs simultaneously so you never have to miss a message.
Easy access to recent conversations:
· Retrieve all your IM conversations from any PC where you have signed in to Yahoo! Messenger.
· Person...

Reasons why this program is marked as ad-supported:
· Displays ad banners or other types of advertising material during its runtime