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WikiPedia: Spotify http://www.smh.com.au/entertainment/music/spotify-... http://www.alexa.com/siteinfo/spotify.com http://www.bbc.com/news/technology-22166416 http://www.billboard.com/biz/articles/news/1098486... http://www.billboard.com/biz/articles/news/1163725... http://www.bloomberg.com/research/stocks/private/s... http://www.businessinsider.com/spotify-pricing-pla... http://edition.cnn.com/2011/TECH/web/07/13/spotify... http://www.duedil.com/company/06436047/spotify-lim... http://www.irishtimes.com/blogs/ontherecord/2012/1...