Thursday, April 22, 2010

Facebook f8 announcements: Graph api, OpenGraph protocol, and plugins

Today's Facebook F8 conference has 3 major announcements

1. Plugins for 3rd-party websites
2. Graph API
3. OpenGraph protocol

1. plugins for 3rd-party websites

This includes:
Activity stream plugin – allows other website to add Facebook “news feed” to their site
Social bar plugin – allows other website to add barlet at bottom of their site.  Chat included.javascript:void(0)
Like plugin – allows other website to add Facebook “Like” button
Login plugin – can show which of your friends have login to this site.
Recommendation plugin

2. Graph API
Facebook have overhauled their api.  The so-called "Graph" api is now the way for apps to access all api.

3. OpenGraph protocol
This requires some explanation.

OpenGraph protocol specifies a set of structured meta data that can be more easily understood and categorized by machines.  Once a 3rd-party website embed these data, it allows facebook to include the site and these data as part of the Facebook OpenGraph.

Eg. IMDB website can use OpenGraph protocol to describe a movie object

<html xmlns:og=""
     <title>The Rock (1996)</title>
     <meta property="og:title" content="The Rock" />
     <meta property="og:type" content="movie" />

     <meta property="og:url" content=" "/>
     <meta property="og:image" content="" />


When this is included, Facebook can store this site as an object in the OpenGraph.  And that object will have these properties: title="The Rock", type="movie", url="...", image="...".

How is OpenGraph significant?

If facebook's vision of opengraph succeed, they could be the connector of the web!
In terms of the flexibility and coverage, what facebook wants to do with OpenGraph may seem like a baby step comparing to what Semantic Web wants to do. Facebook only define a small set of predefined meta data.  While semantic web have various powerful ontologies already defined.  However, with facebook's reach and appeal, facebook might finally get a lot of website owners to embed structured metadata, which would be a significant milestone for semantic web in any case.  This may turn out to be a giant leap for semantic web.  

Apple should not limit the language used by developers

Many people were pretty upset about Apple's decision two weeks ago to ban users from using other programming language to develop iPhone app. All I can say is that I did not remember Microsoft banning developers from using other languages to develop on Windows. Apple seems to be worse than Microsoft in this case.

Thursday, April 1, 2010

Event: FLEX 4 Launch Tour and Livecycle Code Night

FLEX 4 Launch Tour and Livecycle Code Night

Thursday April 1st
6:30 Pizza, 7pm Meeting

Sponsored by Adobe

Adobe HQ - East Tower
345 Park Ave
San Jose, CA 95110

rsvp | map

Duane Nickull (aka Duane Chaos) is in town so we are getting him and the local Livecycle evangelists out for a special evening on Flex 4 (the new release) and Livecycle!! The evening will involve an early start for those wanting to learn about getting started with Livecycle followed by increasingly in-depth code examples and reviews.

  • Duane Nickull (blog) - Adobe Evangelist
  • Bill Shapiro (Linkedin) - Technology Entrepeneur at Adobe Systems
  • Matthais Zeller (blog) - Group Product Manager, Enterprise Rich Internet Applications

  • More info at: