Your charts are amazing!
I spend hours a day watching them.
Great service I appreciate it very much.
I already sent you some BTC to support you.
what premium users can expect in future?


I think people would love if we can also trade through API or have more coins or also some historical data from 2011 up till now or at least more data from 2013 for more coins.
You can try to make some beta testing of many new functionalities for free (it could attract meny new users) and premium users will get functionalities which has been already tested and which are working well.