You can scale tracking parameters across various levels of your accounts and set up new custom tracking parameters. Note that if you are using auto-tagging in Google AdWords, this change won’t affect your accounts or the way your destination URLs are handled or the data that gets passed to Google Analytics. That said, you might want to consider using ValueTrack and custom parameters (more on these below) to gain more information about your ad performance. Additionally, at some point this year, the Destination URL option will be retired, so you might as well start using the Final URL option described below. Get the full story at Search Engine Land