How did football fans come to adopt Seven Nation Army?

The White Stripes' Seven Nation Army greeted every goal in Euro 2012. How did this naggingly simple rock song conquer sport?

Source: http://www.bbc.co.uk/news/magazine-18673916#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa

ethan allen packers green bay packers chile earthquake uplink