What is 2.0?

I was at a meeting on Saturday, and we were trying to define 2.0 as it applied to Libraries and the Web. So I went to the ultimate 2.0 web site and checked out what Wikipedia had to say:

Web 2.0 refers to a perceived second generation of web-based communities and hosted services — such as social-networking sites, wikis and folksonomies — which aim to facilitate collaboration and sharing between users. The term became popular following the first O'Reilly Media Web 2.0 conference in 2004.[1][2] Although the term suggests a new version of the World Wide Web, it does not refer to an update to any technical specifications, but to changes in the ways software developers and end-users use the web. According to Tim O'Reilly, "Web 2.0 is the business revolution in the computer industry caused by the move to the internet as platform, and an attempt to understand the rules for success on that new platform."[3]

Some technology experts, notably Tim Berners-Lee, have questioned whether one can use the term in a meaningful way, since many of the technology components of "Web 2.0" have existed since the early days of the Web.[4] [5] Simon Fjell created a Web 2.0 site as early as 1994 with the creation of Community Streamwatch. This site allowed school groups monitoring the water quality of waterways in Melbourne (Australia) to share findings to generate whole catchment assessments.

Link

Well, that explains it!

Personally, I think the Time Magazine article, "Time's Person of the Year: You" makes it a little easier to understand. "It's a tool for bringing together the small contributions of millions of people and making them matter." That makes a lot more sense.

So, if that's Web 2.0, what are 2.0 Libraries supposed to look like?