Call their phones. Call their PCs. Call your friends' mobile or landline phones. It's affordable, both within the US and internationally. And calling someone's PC is always free. See them on the screen Show and tell: Grab a webcam and start a video conversation within minutes. Share stuff Set up a Sharing Folder with a friend. Drop in photos and other stuff, as many as your computer can handle. See your Sharing Folder even when one of you is offline. Now: Talk to your Yahoo! friends, too The world's largest IM network has just gotten bigger—and better. With Windows Live Messenger you can now connect with your Yahoo! IM contacts. Forget about using multiple accounts to talk to your friends—IM them all with Windows Live Messenger. Here are some key features of "Windows Live Messenger": · Talk to your Yahoo! friends, too With Windows Live Messenger, you can now connect with your Yahoo! friends. Forget about using multiple accounts to talk to your friends. You can do it all directly from Windows Live Messenger. The world's largest IM network has just gotten bigger—and better. · PC-to-PC Calling Speak your mind: Have a high-quality voice conversation using PC-to-PC Calling. Free. · Even better video conversations Those old science fiction movies with TV phones? That's what the new Messenger will give you, only better: live, full-screen (640x480) video. · Sharing Folders Drag a file onto a contact’s name. You’ve just created a Sharing Folder. Now you and your contact can get to all the files in the folder any time, even if one of you is offline. · Text message their phones See a little mobile icon next to a friend's name? Just right click to send a text message. · Your two-way, super-powered address book With Windows Live Contacts, whenever your contacts update their information, it will also be changed in your Messenger address book. Instantly. (Your Windows Live Mail address book will be updated, too.) · Windows Live Alerts Headlines, sports scores, traffic, or just about anything else you want to keep up with—get pop-up notifications of things as they happen.   read more »