From what I have seen, Web 2 is mostly about Web Apps. Personally I really don't want to put my personal data on some web site. To do so is just crazy.
Call me paranoid but companies like Google already have you, if you use half their services. Its just too much!
Just my opinion.
I absolutely agree, I'm very conservative when it comes to technological progression. Too often in society, especially with regards to technology, we tend not to look before we leap, and don't think of the (long term) consequences of our decisions. That being said I do have semi-personal information on the web, but I do my best to control the privacy of that information. It also should be noted that Web 2.0 isn't the first instance of such privacy concerns, companies have for a long time held customer's personal/private information. Web 2.0 merely is making it easier for other Internet users to access such information if you don't take certain measures of protection.
Here's how Wikipedia defines it:
http://en.wikipedia.org/wiki/Web_2"Web 2.0 is a term describing the trend in the use of World Wide Web technology and web design that aims to enhance creativity, information sharing, and, most notably, collaboration among users."
Long before it was defined, I considered this Web 2.0 movement summated in one word/phrase to be about (social) interaction. The transition from Web 1.0 with very static webpages, to webpages becoming more dynamic and centered around social interaction and collaboration.
