The UI, layout flow of content, customer service support - all just great! I have found nothing so far which i can complain about at this point in time. We are using it as an additional tool when looking up influencers within our niche space. It's really awesome how you get such useful insights from different sources like twitter trends or even more specific data points by geolocation etc. So we use them together with social intelligence tools like BuzzSumo (BuzzCloud) to find better insights into where people talk most frequently online.