- RockYou is a leading provider of social widgets and applications for sites like MySpace, Facebook, and OpenSocial platforms, with over 50 applications and 105 million unique users. - They discuss designing effective viral loops to drive exponential growth through optimal conversion funnels, distribution channels, and end user value. - OpenSocial provides opportunities to write applications once and deploy across multiple social networks, but each platform has different audiences, viral channels, and levels of maturity that must be considered.

1. Building Massively Viral Apps for Facebook and OpenSocial Eric Yieh, Director of Product Management

3. Who is RockYou? Over 50 Applications and Widgets

7. The Opportunity

8. Market for Social Apps is Exploding Wikipedia.org Alexa Global Traffic Rankings 1 2 3 4 5 6 7 8 9 10 2005 (U.K.) 2008 1 2 3 4 5 6 7 8 9 10

11. The Viral Loop

18. Tuning the Viral Loop

19. Metrics for your viral loop User Call to action to invite friends x = invited friends Accept? Yes y% = invite accept rate x * y > 1 gives you viral growth!

23. Tuning the viral loop – watch your metrics

26. OpenSocial

28. OpenSocial containers Now Playing Coming Soon!

31. Myspace

33. Hi5

35. Orkut

36. Choosing a Platform

37. So many platforms…what to do? How do you decide which platform to start on?

43. Questions? Email: eric@rockyou.com