- Makers of 'Clumsy Ninja' app acquired by Zynga for $527 million, and other news for January 31 | TUAW – The Unofficial Apple Weblog[lien disparu]
- Why Sales Organizations Fail – Steve W. Martin – Harvard Business Review
- Zynga Buys NaturalMotion For $527M, Signaling A New Tack For The Gaming Giant | TechCrunch