I like that it's easy to use, gives me good insights into user behavior in my website as well provides us with great data about our users' interests so we can serve them better! It would be nice if there was more flexibility when setting up campaigns or creating custom reports/charts - but these are small issues comparedto all of its other benefits which make this tool such an amazing asset!! The integration capabilities also work very smoothly together allowing you do have one place where everything comes from (analytics + marketing).