Tim O'Reilly attempts to clarify just what is meant by Web 2.0, the term first coined at a conference brainstorming session between O'Reilly Media and MediaLive International, which also spawned the Web 2.0 Conference.
Ajax is changing web applications, giving them a responsiveness that's unheard of beyond the desktop. As Akash shows in this hands-on tutorial, jQuery makes it easy to integrate Ajax into your web applications.