Over the years, Google has introduced many useful tools and programs. Gmail and Adwords have to be on the top of my list, but in recent months Google Tag Manager has also joined my list of favorites. If you do any sort of tracking for your online marketing and you don't already use Google Tag Manager, you're missing out! In a nutshell, it streamlines all of your tracking so that you only have to ask your developers to put one tracking code on your whole website. Oh, and did I mention that it's free?