Skype is a computer program that can be used to make free voice calls over the Internet to anyone else who is also using Skype. It's free and considered easy to download and use, and works with most computers. Once you download, register and install the software, you'll need to plug in a headset, speakers or USB phone to start using Skype. On September 12, 2005 Skype was acquired by eBay.
See also Internet telephony.