What makes something Web 2.0?

As I was checking out the news wire today, I saw the following headline, "CampusVue 8.2 Brings Web 2.0 to Higher Education". And so I started to read the release and wondered if this really qualifies as Web 2.0.

Here are their upgrade notes:

• Migration of the entire portal product to Microsoft(R) .NET 2.0.
• Home page customization, allowing users to personalize their home pages' content and layout.
• Content syndication with RSS, enabling students and staff to easily add an unlimited amount of external content directly to their homepages.
• More proactive and comprehensive student-faculty advising with enhanced event-driven workflows and contact management.
• Unofficial student transcripts now viewable online.
• Improved security through Active Directory support and authentication.
• Integration to CampusVantage(TM) Financials/HR solution provides seamless transitions between the products and enables users to access CampusVantage self service functions right from the staff portal.

So I ask you, the experts… what makes something Web 2.0? Forget defining it in sentence form. What technology characteristics must it possess to be classified Web 2.0?

Is it:

• RSS
• Wiki
• Ajax
• CSS
• Forums
• Blog
• Email lists
• Mashup
• Personalization
• Start page
• what am I missing????

Based on this list, this announcement from CampusVue does not qualify as Web 2.0.