I like how easy it is for me as an advertiser or publisher (or anyone) that wants analytics data about my ads/publishers campaigns! It also has some great insights into what works best with certain audiences so we can make better decisions going forward regarding our ad spend strategy moving forwards too!! The only thing i dislike at this time would be if you could have more granular control over your reports but then again maybe thats just something they're working out right now? As mentioned above - very useful analytical dashboard which helps us understand where there may need improvement when looking after clients' accounts etc.