In terms of accuracy we are doing fairly well (better than predicting a straight line so works on average): https://bitbank.nz/accuracy
We have more to go in terms of making the accuracy more transparent, you can also click on the charts to see our historical predictions and how they line up with what actually happened.
We are also now predicting volatility: http://blog.bitbank.nz/predicting-cryptocurrency-volatility/
Sign up and give me an email at leepenkman@bitbank.nz and ill give you some free time
Let me know how it goes.
Thanks.