This document compares the Facebook and OpenSocial platforms for building apps, discussing their features, advantages, and user bases. Facebook has a larger user base but limits what apps can do, while OpenSocial allows apps to work across different social networks but has fewer users currently. It concludes that both platforms will continue developing and neither will be a clear winner, as people will use multiple networks and apps.

1. Vs Which one I should choose?

2. Facebook Facebook

3. OpenSocial OpenSocial

4. Building App for single platform

5. What to do?

6. Solution

8. OpenSocial Partners

9. Time for comparison Time to do some comparisons

13. Criticism of OpenSocial

18. Facebook Advantages – To Apps.. 2 The API provides the following additional functionality over that of OpenSocial: * Reading events * Reading a person’s groups * Reading/writing photos * Reading/writing marketplace listings * Setting a person’s status * Setting content elements to be cached on Facebook

20. Userbase Facebook

21. Userbase Facebook…2

22. Userbase OpenSocial

24. Userful data ..2 Facebook Users 62% are on MySpace, 5% are on LinkedIn, 9% are on Friendster, 10% are on Plaxo, 22% are on Hi5 MySpace Users 11.3 million users identified in Rapleaf 63% female, 36% male 15% are on Facebook, 2% are on LinkedIn, 9% are on Friendster, 6% are on Plaxo, 17% are on Hi5

25. Userful data ..3 Number of Applications 2% are on MySpace, 5% are on LinkedIn, 9% are on Friendster, 10% are on Plaxo, 22% are on Hi5 MySpace Users 11.3 million users identified in Rapleaf 63% female, 36% male 15% are on Facebook, 2% are on LinkedIn, 9% are on Friendster, 6% are on Plaxo, 17% are on Hi5

26. Future Google will continue to develop new tools to allow developers to help make the web more open. More partners will join. Facebook will continue to grow only if they eventually open their doors and let Facebook info go beyond their domain name.

27. Final Thoughts There isn't going to be one winner and one loser. People will continue to use many networks and apps.