If you are looking for an analytics tool to help you measure your online marketing, then you’re in luck. There are hundreds, if not thousands that measure various online marketing strategies. Heck, there are hundreds that you can use just help you measure your Twitter activity. But the question is, which metrics are just for show and which ones actually affect your bottom line? In this guide, we’re going to explore popular metrics for different avenues of online marketing, whether they matter for your business, and the one metric that rules them all.