I have been asked to put together a short (15 minutes) presentation next week on Web 2.0 for an offsite meeting. Borrowing liberally from Tim O’Reilly’s excellent primer and with some images from Dion Hinchcliffe’s Flickr slide show on the subject, I put together the following:-

First off, Tim’s list (apparently brainstormed with John Batelle) comparing the two webs:

Web 1.0 –> Web 2.0
DoubleClick –> Google AdSense
Ofoto –> Flickr
Akamai –> BitTorrent
mp3.com –> Napster
Britannica Online –> Wikipedia
personal websites –> blogging
evite –> upcoming.org and EVDB
domain name speculation –> search engine optimization
page views –> cost per click
screen scraping –> web services
publishing –> participation
content management systems –> wikis
directories (taxonomy) –> tagging (“folksonomy”)
stickiness –> syndication

Then his six principles:-

1.The Web As Platform
[Netscape vs. Google] [Akamai vs. BitTorrent] [Double Click vs. AdSense]

2.Harnessing Collective Intelligence
[Britannica vs. Wikipedia] [Amazon vs. Barnes and Noble]
“Network effects from user contributions are the key to market dominance in the Web 2.0 era.”
The Long Tail

3.Data is the Next Intel Inside
The race is on to own certain classes of core data: location, identity, calendaring of public events, product identifiers and namespaces. In many cases, where there is significant cost to create the data, there may be an opportunity for an Intel Inside style play, with a single source for the data. In others, the winner will be the company that first reaches critical mass via user aggregation

4. End of the Software Release Cycle
–Operations must become a core competency
–Users must be treated as co-developers (Carl Henderson, the lead developer of Flickr, recently revealed that they deploy new builds up to every half hour)

5. Lightweight Programming Models
– Support lightweight programming models that allow for loosely coupled systems
– Think syndication, not coordination
– Design for “hackability” and remixability
Innovation in Assembly – mash-ups

6. Software Above the Level of a Single Device
– i-Tunes, TiVo, Google search

7. Rich User Experiences (AJAX)
–standards-based presentation using XHTML and CSS;
–dynamic display and interaction using the Document Object Model;
–data interchange and manipulation using XML and XSLT;
–asynchronous data retrieval using XMLHttpRequest;
–and JavaScript binding everything together
(quoted from Jesse James Garrett, Adaptive Path, the man credited with inventing the term “AJAX” )

List of interesting Web 2.0 sites:-

Writely online word processor and collaboration site (just bought by Google)

Google Local – mainly for the AJAX drag and drop maps

Flickr – world’s biggest photo site – just passed 100 million images, now owned by Yahoo!

Del.icio.us – first and best social tagging or “folksonomy” site

Wikipedia – world’s largest online encyclopedia – entirely written by volunteers

Digg – fairly new collaborative news sites; users votes determine what makes it to the top of the page

Housingmaps – a mashup between Google maps and Craigslist

Memeorandum – ranking blogs of popularity and providing RSS and web interfaces to the result

Technorati – blogging services site which has a range of search and analytical tools which help keep tabs on the blogosphere.