1. Battle.net. http://us.battle.net/en/ . Accessed 17 March 2014
2. Bittorrent. http://www.bittorrent.com/ . Accessed 17 March 2014
3. Gaikai open cloud gaming platform. http://www.gaikai.com . Accessed 18 March 2014
4. Gaikai will be fee-free, utilize 300 data centers in the US. http://www.joystiq.com/2010/03/11/gaikai-will-be-fee-free-utilize-300-data-centers-in-the-us/ . Accessed 18 March 2014
5. Gdc09 interview: onlive founder steve perlman wants you to be skeptical. http://www.joystiq.com/2009/04/01/gdc09-interview-onlive-founder-steve-perlman-wants-you-to-be-sk . Accessed 18 March 2014