The ability to see all of our traffic sources, as well has being able manage them from one dashboard so it's very easy! I love that you can set up your own goals in order create custom reports using Google Analytics or Facebook Insights data if needed (you don't have access). There are some things about capturls which could be improved but overall they're great at what their doing - making tracking easier than ever before with many features available through integrations like google adsense/doubleclick etc..