The trouble, of course, is that conversion goals don’t come ‘preloaded’ with each new Google Analytics account. And you can’t get access to historical, legacy data, either. That means when you let days (or weeks) go by without setting up conversion goals properly, you’re going to lose all of that information forever. What Does Google Analytics Do? And What Can I Do With Google Analytics? Updated March 10, 2020 By Nate Shivar Disclosure - I receive a commission when you make a purchase from the companies mentioned on this website. All data & opinions are based on my experience as a customer or consultant to a customer. Conversion rate…it might sound like some sort of religious metric, but in reality, it’s one of the best ways to measure the performance of your advertising campaigns.. Unlike click-through rate or cost-per-click, conversion rate describes how good your marketing is at getting people to do what you want them to do (we call this “converting” in the marketing world).