Overall rating Based on 370 reviews
Works really well - great ROI. Only drawback is that it's slow to load and that impacts on site loading speeds. Not sure if a fix is on the way but that's the only caveat really.
Ad performance - Good ROI. We are looking at 2500 - 3000%
Support - Great. Support team usually replies within a day.
Ease of use - Very easy to create ads. No codes needed. No need to create rss feed etc etc.
Backend - As of 19-Jan-2016, backend is still lacking. Ad creation page and analytics page are of different domains. Would be good if they can link up the 2 sections into one backend. Support team did feedback that they are working on providing us a full-fledge backend. Will give it a 5-stars once that is done.