What Is Web 2.0 (1018 tags)
Defining just what Web 2.0 means (the term was first coined at a conference brainstorming session between O'Reilly and MediaLive International, which also spawned the Web 2.0 Conference), still engenders much disagreement. Some decry it as a meaningless marketing buzzword, while others have accepted it as the new conventional wisdom. Tim O'Reilly attempts to clarify just what we meant by Web 2.0, digging into what it means to view the Web as a platform and which applications fall squarely under its purview, and which do not.
A Simpler Ajax Path (780 tags)
After years of hacks, tricks, and workarounds, there's finally a cross-browser, cross-platform way to communicate between client and server in web applications. Matthew Eernisse demonstrates how to send and receive structured data with XMLHttpRequest and shows off some tricks to make debugging and error handling easier.
Ajax on Rails (773 tags)
XMLHttpRequest and Ruby on Rails are two hot topics in web development. As you ought to expect by now, they work really well together. Curt Hibbs explains the minimal Ajax you need to know and the minimal Ruby you need to write to Ajax-ify your Rails applications.
Very Dynamic Web Interfaces (630 tags)
Prototype: Easing AJAX's Pain (302 tags)