BitBank actually works very well, I'm open and transparent about the prediction accuracy https://BitBank.nz/accuracy we now plot our recommended buy and sell points over time in the graphs and you can click on a point in the past to see what our forecasts where.

People are often tricked into thinking that trading is a zero sum adversarial game whereas in reality we can all benefit with the surge in crypto, I don't have the capital to trade much myself so I sell the trading system and reinvest in both trading and the trading system.

Unfortunately affiliate programs do come across as spammy less than 1% of traffic currently comes through the referral program so no one's using it really