What is a clickTAG? The very short story is it's a piece of code that tells an ad server that it (the ad itself) was clicked – so its simply a way to track clicks with Flash files. When creative is loaded into an ad server, and then that creative is displayed on a website, a clickTAG ensures that a Flash file registers clicks and sends user to the correct URL. With Flash files no URL is coded to the creative. The URL is provided to us separately to load with the Flash files. The clickTAG then references the URL provided and sends the user along to the correct destination.
You can reference these sites to learn more:
To validate that these ads have successful "clicks" you can then use this link: