As of a few weeks ago, we changed the format to this:
[script]clicky.init( 123 );[/script]
As you can see, the URL of the tracking code is now the exact same for every site that someone would visit with Clicky on it. We just added a seperate function call to set the site ID within the script after it’s downloaded. Since any user’s browser would cache this script, it doesn’t have to redownload it. This means your site will load faster for anyone who has visited another site with Clicky on it in the last 7 days.
So, the point. If possible, please replace the existing tracking code on your site with a fresh copy (go to site prefs, then tracking code, to get a copy). As already mentioned, this will help speed up your site for the average visitor, as well as reducing bandwidth usage on our end.
Of course, the old format still works, and will indefinitely. We don’t want to force you to do this, but if you have a few extra minutes, the web will be a better place. Thanks.
UPDATE: Yes, the new WP plugin has the new tracking code format. This only applies to people who manually paste the code on their site anyways, since using a plugin puts you at the mercy of the plugin developer.