No, really. And please don't say it's just AJAX.
Wikipedia are twats. I don't trust them to give me physical constants reliably.
Getting stuff made by a lot of people and then making money from that. Sounds meh, but you know it's true. It's the one thing all web two point oh sites have in common.
It's a marketing term.
So, basically, it's meaningless.
It's actually rather impressive once you see a full blown web application in action. We're in the process of setting up a Scalix mail server at the moment and what I've seen so far is pretty damn awesome. It replaces about 97% of all the functionality you can get from an Exchange server coupled with Outlook clients. The interface looks and behaves almost exactly like Outlook, not only email but also all the groupware and PIM functionality. The clou is: it all runs as a web interface. So you get an application that runs in your browser and behaves almost like the stand alone application that is Exchange+Outlook. Imagine stuff like office applications running in a browser window and the like. That's Web 2.0 as far as I'm concerned.
I agree with >>5,6.
I also think of Web2.0 in terms of investment: consider it the next wave of capital being dumped into Internet ventures.
From a technical perspective, it's meaningless.
Web 2.0 is pretty much webapps.
Webapps were in Web 1.0. The difference in Web 2.0 is that the sites gather lots more user information, both about the individual items on the site (whatever those happen to be) and also about the users themselves. A true Web 2.0 site requires the original site developers to write absolutely no content because it keeps all the users busy doing that themselves.
It's just AJAX.
>>11
Nope. You can have an AJAX site which is not Web 2.0, and you can have a Web 2.0 site which is not AJAX. That being said, AJAX does contribute to a site looking swisher, which is one of the things people commonly attribute to Web 2.0 even if it isn't one of the actual principles behind the term.
Two words: Round corners.
It's about Javascript being the new win32 API