Web 2.0?

Web 1.0 Web 2.0DoubleClick --> Google AdSense

Ofoto --> FlickrAkamai --> BitTorrentmp3.com --> Napster

Britannica Online --> Wikipediapersonal websites --> blogging

evite --> upcoming.org and EVDBdomain name speculation --> search engine optimization

page views --> cost per clickscreen scraping --> web services

publishing --> participationcontent management systems --> wikis

directories (taxonomy) --> tagging ("folksonomy")stickiness --> syndication

1. End of the Software Release Cycle2. Operations must become a core competency. Google's or Yahoo!'s expertise in

product development must be matched by an expertise in daily operations.3. Users must be treated as co-developers

web 2.0    rss    blog    wiki   

A Web 2.0 website may typically feature a number of the following techniques:

* Rich Internet application techniques, optionally Ajax-based * CSS * Semantically valid XHTML markup and the use of Microformats * Syndication and aggregation of data in RSS/Atom * Clean and meaningful URLs * Extensive use of folksonomies (in the form of tags or tagclouds, for example) * Use of wiki software either completely or partially (where partial use may grow to become the complete platform for the site) * Weblog publishing * Mashups * REST or XML Webservice APIs

Rich Internet Applications

http://www.netvibes.com/

http://www.google.com/ig

CSS

Separazione tra contenuto e presentazione

BEGIN:VCALENDAR PRODID:-//XYZproduct//EN VERSION:2.0 BEGIN:VEVENT URL:http://www.web2con.com/ DTSTART:20051005 DTEND:20051008 SUMMARY:Web 2.0 Conference LOCATION:Argent Hotel\, San Francisco\, CA END:VEVENT END:VCALENDAR

Syndication and aggregation

www.syndic8.com

www.newsisfree.com

folksonomies

http

://de

l.ici

o.us

ht

tp://

ww

w.fl

ickr

.com

/

mashups!

http://www.programmableweb.com

Interazione tra servizi di ‘siti’ diversi