Most social game developers claim to a/b test these days, but to succeed testing must be part of your culture. How can you foster this across the organization and avoid common pitfalls? At GSN every developer, designer and marketer thinks about a/b testing. This is how we have managed to sustain growth on the Facebook platform for over 3 years.

What are common mistakes people make when designing tests? What shouldn't you test? How long should your let your tests run.