What's your definition of Web 2.0?

It seems to mean different things and different technologies to different people.

What's your definition of Web 2.0?
The best article I've read on the subject is in the link below. In summary, the article cites the following 7 factors common to Web 2.0:





* Services, not packaged software, with cost-effective scalability


* Control over unique, hard-to-recreate data sources that get richer as more people use them


* Trusting users as co-developers


* Harnessing collective intelligence


* Leveraging the long tail through customer self-service


* Software above the level of a single device


* Lightweight user interfaces, development models, AND business models
Reply:The definition seems extremely broad. I'd say that any high quality website built in the year 2005 has been called "Web 2.0" by someone.
Reply:Wikipedia has a good article on it - http://en.wikipedia.org/wiki/Web_2.0 .





Personally, I regard the term as being mostly semantically meaningless.
Reply:My own little definition is web applications that mixes the easiness of web tools with the power of desktop applications