Voice Over Internet Protocol (VoIP) was invented in 1995, however the concept of VoIP can be traced back to Alexander Graham Bell and the 1st telephone. With the introduction of VoIP players from around the world have the ability communicate to each other instantly through headsets or microphones, allowing for a more enhanced social experience.
Source: John Halloran, “Game Changer? How Voip Is Impacting the Way We Play,” International Journal of Interactive Worlds (2011): 1-27, http://web.ebscohost.com.ezproxy.umw.edu:2048/ehost/detail?vid=3&hid=110&sid=ea86330a-f7a8-4b83-8a50-c1dddda24c0c%40sessionmgr104&bdata=JnNpdGU9ZWhvc3QtbGl2ZQ%3d%3d#db=a9h&AN=66384875 (accessed December 9, 2011).
Image Source: “Logitech Wireless Gaming Headset G930,” Logitech, http://www.logitech.com/en-us/gaming/headsets/devices/7248 (accessed December 11, 2011).