When using Google analytics you probably have seen a bell icon on the top right corner with a number inside a bubble. This is a list of notifications generated by Google’s machine learning algorithms. Clicking this bubble  will show you a list of potential issues, affecting your data collection and reports. If you are running a lot of online campaigns you’ve definitely seen this warning: Duplicate Campaign Parameters. Why do you see “Duplicate campaign parameters” notifications? This notification appears when Google detects multiple campaign parameters (utm_source, utm_term etc.) using exactly the same value but different case. Since Google Analytics is case...