At this point the notion of Web 2.0 is firmly established, if not endlessly debated and re-debated. Here is my take on organizations/sites that exemplify modern web technology and business models:Google: the so called "heart of the web"
Amazon: leveraging infrastructure to provide a service-based computing grid
37Signals: Leveraging scripting language frameworks to create useful, web-centric applications
Wikipedia: proving that collective knowledge is useful
Flickr: combining photos with community on a web-scale platform
Facebook: connecting people and what they care about
del.icio.us: Preserving and sharing the journey through the web
digg: what is cool and interesting now
salesforce.com: challenging the big boys on web-based applications and platforms
