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. 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!