The best thing about it was how easy to implement, I could test my ads as i used different campaigns by changing their parameters until they were working well with our website design!The other great part is its fast loading times when you are using mobiles devices which makes your customers feel more comfortable because if there's laggy or slow connections people will just leave without clicking any links in an email etc..
It would be better adding some features like making video advertisements too so we can reach out many countries where internet speed might not support downloading videos from youtube due thoght this has been one problem ever since inception but now seems solved somehow :). Make sure u choose someone who knows what he/she does cause sometimes things go wrong unexpectedly (not always)I have noticed nothing negative at least yet regarding DJaX MAd server service provided us through them! We use DMAS solely only.