Technology Behind Web
2.0
Isriya Paireepairit

Agenda
• Blog
• Feed
• P2P
• Social Network

Blog
“CMS for Personal User”

Blog - Intro
• Weblog / Online Journal / Online Diary
• Ordinary CMS (Just PHP + MySQL)
• Contents are sorted by Date
• Easily published by Author

Blog - Popularity
• Technorati database contains 30.5M blogs
• Even Sun President has his own blog
• Non-mainstream media
• Buzz Marketing

Blog - Derivative
• Now Blog has been developed to
• Group Blogging
• Planet (with Feed)
• Photoblog
• Podcast (Audioblog)
• Videoblog

Blog - Provider
• Global
• Blogger - Google
• LiveJournal
• Xanga
• MSN Space

Blog - Provider
• Local
• Pantip - Bloggang
• Exteen
• Diaryhub
• Thaidairist

Blog Softwares
• MovableType - still the most popular
• WordPress - Open Source Counterpart
• Major CMSs already have blog module
• Drupal, Mambo, Joomla, *Nuke
• CMS for blogging
• Serendipity, Textpattern, blosxom

Blog - Solution
• Don’t Reinvent the Wheel
• Use exist blog engines
• In case that main website exists
• Seperate new blog site

Feed
Simple Text File used as Notification

Feed - Intro
• Naming
• Web Feed
• Content Syndication
• Content Aggregation
• also
• RSS, Atom, Orange XML?

Feed - Concept
• Transform content of web site into standard XML
• Put it somewhere on server, provide URL
• Feed Readers (aka Aggregators) read Feed
periodically
• If Feed has new content, notify user
• Similar to “Push Technology” (Active Desktop: 1997)

Feed - Type
• Now there are 3 formats
• RSS 1.0
• RSS 2.0 - most popular
• Atom 1.0
• IETF Standard
• Supported by Google
• Technology advance over RSS

Feed - Reader
• Bloglines - most popular (Web)
• Google Reader, Rojo (Web)
• NetNewsWire, NewsFire (Feed App)
• Firefox, Thunderbird, Google Desktop
(Normal App)

Feed - Howto
• Modern CMS have Feed built-in
• Content Wrapper e.g. FeedBurner
• or Write your own (not very hard)

New Media
• “Blog” - Reader can be Author
• “Feed” - Distribution of Content
• Then “Blog + Feed” create path for new,
personal, independent media

P2P
Content Distribution Infrastructure

P2P
• Content Downloader can become Content
Provider
• Don’t need Central Servers (e.g. BitTorrent)
• P2P is infrastructure to transfer large size
content

P2P - Networks
• Popular Networks
• Napster
• Kazaa / Limewire / eMule / eDonkey /
Gnutella
• BitTorrent

Social Network
Effective way to solve huge problem

Social Network
• AI has took so long...... to mature
• Many many people together can work as
well
• Share common interest

Social Network -
Success Case
• Open Source - Software Development
• Wikipedia - Content Creation
(Encyclopedia)
• del.icio.us - Site Information
• Dmoz.org - Site Information
• Last.fm - Music
• Orkut - Contact Information

Social Network
• Social Network is not technology in term of
implementation
• It’s how task can work via web
• Simply PHP/MySQL can be Social Network