The document provides an overview of Yahoo's Open Strategy (Y!OS) which aims to establish a social dimension on Yahoo properties and open the Yahoo platform to allow third party applications. It discusses the goals, components and resources available in Y!OS including profiles, authentication methods, APIs, software development kits and more. Code examples are provided for how to use Yahoo Markup Language (YML), the PHP SDK and Yahoo Query Language (YQL) within the Y!OS platform.

1. Yahoo! Open Strategy Y!OS December 20, 2008 Jonathan LeBlanc – YDN

2. Y!OS Goals

3. Establish a Social Dimension – Profiles http://profiles.yahoo.com

4. Establish a Social Dimension – Small View http://my.yahoo.com

5. Opening Yahoo – Application platform (YAP) http://developer.yahoo.com/dashboard

6. Opening Yahoo – Application Gallery http://apps.yahoo.com/myapps

12. YAP Components – Software Development Kits (SDKs) http://developer.yahoo.com/social/sdk PHP SDK Currently Available Open and OAuth Applications ActionScript 3 SDK Currently Available Open Applications Java SDK in Development Open and OAuth Applications

16. YAP Applications – Open Applications Creating an Open Application – Step 1

17. YAP Applications – Open Applications Creating an Open Application – Step 2

18. YAP Applications – Open Applications Creating an Open Application – Step 3

19. YAP Applications – Open Applications Creating an Open Application – Step 4

20. YAP Applications – Open Applications External Access Prohibited

22. YAP Applications – OAuth Applications Creating an OAuth Application – Step 1

23. YAP Applications – OAuth Applications Creating an OAuth Application – Step 2

24. YAP Applications – OAuth Applications Creating an OAuth Application – Step 3

25. YAP Applications – OAuth Applications Creating an OAuth Application – Step 4

26. YAP Applications – OAuth Applications Creating an OAuth Application – Step 5

27. YAP Applications – OAuth Applications Creating an OAuth Application – Step 6

31. Y!OS Deep Dive December 20, 2008 Jonathan LeBlanc – YDN

33. YML – Available Tags YML Tags yml:a yml:audio yml:form yml:friend-selector yml:if-env yml:image yml:message yml:name yml:profile-pic yml:pronoun yml:share yml:swf yml:user-badge yml:visible-to-friends yml:visible-to-owner yml:visible-to-user YML Lite Tags yml:a yml:audio yml:form yml:if-env yml:image yml:name yml:profile-pic yml:pronoun yml:user-badge

35. YML – Sample YML Use Tab Controller

36. YML – Sample YML Use Tab Construction

37. YML – Sample YML Use Tab Styles

39. PHP SDK – 2-Legged OAuth Initialization Used For: Applications which only require access to public user data and open APIs

41. PHP SDK – User Data Manipulation

42. PHP SDK – Create an Update for a User

43. PHP SDK – Set the Status (Presence) of a User

45. YQL – Console Location: http://developer.yahoo.com/yql/console

46. YQL – Query Structure Projection - SELECT what FROM table - SELECT * FROM social.connections Local and Remote Filtering - SELECT what FROM table WHERE filter - SELECT * FROM social.profile WHERE guid = me Sub-selects - Joining Data - SELECT what FROM table WHERE fieldvalue IN (SELECT ...) - SELECT * FROM social.profile WHERE guid IN (SELECT guid FROM social.connections WHERE owner_guid=me) Local Paging Control - SELECT what FROM table WHERE filter LIMIT 10 OFFSET 50 - SELECT * FROM web.search WHERE query="madonna" LIMIT 3 OFFSET 10 Remove Table Size Control - SELECT what FROM table(0,500) WHERE condition - SELECT * FROM web.search(0,10) WHERE query="madonna" AND result.XXX = something

47. YQL – Available Tables YQL Command: SHOW tables

48. YQL – Table Contents YQL Command: DESC social.connections

49. YQL – Running a Query

50. YQL – Output Types

52. Caja & JavaScript – Before Cajoling

53. Caja & JavaScript – After Cajoling