Annotate your Google Analytics.
A new feature of Analytics that rolled out this past year was Annotations. They allow you to make a note on any given day about what caused a spike in traffic to your website. For example, my company did a Groupon feature. When we did this, the traffic to our web page was the highest it had ever been – by 500%. So I have a little note in Google Analytics that says “Groupon feature.”
So if I hadn’t had done that, two years later no one would remember why there was such a spike in January. This is a very powerful tool when it comes to tracking your marketing ROI.
For a video on Annotations, see here.