http://www.skype.com
Not content to be hounded with lawsuits from only one stodgy industry, the creators of Kazaa are now trying to add telephone service providers to the list of people who want their technology wiped from the Internet. Skype adds makes peer-to-peer phone communication possible, producing calls with better clarity than traditional phone lines. The beta is currently free and will work with virtually any headset. I recommend against using traditional computer speakers for listening because it creates an echo effect for the listener on the other end which isn't very pleasant. No spyware or adware is included in Skype.
