It’s yet another AJAX application, yes. AJAX may as well be the cliche of the year in tech terminology, but this is cool. DIGG capitalizes heavily on AJAX and PHP development, and they’re perhaps trailblazers in this thing called Web 2.0 with their “collaborative editorial” efforts when it comes to tech (or weird?) news.
DIGG Spy gives you updates on DIGG diggs, comments, and new articles as they happen.
You get an overview of what exactly the action is (link, digg, comment), the title, who wrote it (or why an action is done), the number of diggs the article currently has, and the location of the story (frontpage or elsewhere).