• http://stephaniefusco.com/2012/05/glee-uses-gamification-pinterest-to-unveil-new-songs/
• http://news.cnet.com/8301-32973_3-57405494-296/the-startup-accelerator-boom...er-bubble/
• http://techcrunch.com/2012/07/25/paul-graham-y-combinator-companies-have-raised-over-1-billion