Receive phone calls: get a phone number for your Messenger and start taking phone calls on your computer with Yahoo! Phone In.Cheap PC-to-phone calls: make calls from Messenger to landline and mobile phones at low rates with Yahoo! Phone Out.Free voice conversations with other Messenger users on both Mac and Windows.Express your feelings in a conversation using these little animated smiling faces.Send files to friends and receive notification when they have been received.Use a webcam to share live video with your friends.Stay connected to Yahoo! Messenger on your mobile phone.Unlike email, instant messages appear as soon as they're sent.