id	domain	url
spir-8825	www.gamasutra.com	http://www.gamasutra.com/view/news/30877/gdc_online_bartle_on_muds_soul_design_must_w
spir-8825	www.sirlin.net	http://www.sirlin.net/articles/balancing-multiplayer-games-part-1-definitions.html
spir-8825	www.guardian.co.uk	http://www.guardian.co.uk/politics/2001/jun/29/comment