At our last monthly technical luncheon I gave a presentation on Google Analytics Event Tracking.
Event Tracking in Google Analytics lets the web developer track AJAX requests and by extension Flash events too. AJAX requests don’t cause page views but as more and more web applications use AJAX it’s important to track the AJAX requests in addition to the standard page requests. Here are some examples of things you can track with GA Event Tracking that you typically wouldn’t be able to track with the standard Google Analytics Javascript embed: