The best thing about this tool it's that you can use your own custom CSS to make things easier for users who do not have great graphic design skills! Also very easy way out if I ever need some help with my website SEO or Google Analytics reporting since they are both integrated into one dashboard so no more searching two different tools just in case something goes wrong!! Nothing really bad but sometimes when there isn't enough space left (or even worse - too much!) after adding all elements from their list we end up having empty blocks which looks kind-of messy especially considering how important user experience matters nowadays :) Would definitely recommend anyone looking at using these services as well because everything else will be worth its weight once people realize what benefits those provide them :).
It was mostly used by our product managers/ marketers team members while doing A / B tests etc.. They would see where most visitors were coming form first time.