Additional Resources
"What Is Web 2.0": an influential 2005 blog post by Tim O'Reilly
All Things Web 2.0: Website with a directory of Web 2.0 services, categorized by function
Go2Web20: Another useful Web 2.0 services directory, Go2Web20 also walks the talk by using Web 2.0 technologies such as AJAX and tagging
TechCrunch: Blog by Michael Arrington dedicated to profiling and reviewing Web 2.0 products and companies.
"Web 2.0 ... The Machine is Us/ing Us": Video by Kansas State University professor Michael Wesch that cleverly illustrates how Web 2.0 continues the evolution of the Internet