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.
NOTE: The Yahoo! Messenger Vista Preview works only on Vista OS.
This download is marked as adware because it displays advertisement banners or other type of commercials while running.

Here are some key features of "Yahoo! Messenger":
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.