Hmm, this is more like project development area material.
I've read the article, you're basically something more or like tradelize and a lot like it, traders publish their moves, they can choose to hide their trades before a paywall, you take 20% commission the rest goes to the trader.
You're going to have a hard time getting both the traders and the ones paying for their advice, platforms like this have increased a lot lately but good luck with it!
Looks like a nice idea, I'd be interested in subscribing to others when that becomes available (as I don't have the time to do this sort of thing myself)..
I suck at trading and I even suck on picking who to follow for advice
, so I think I will pass.
Reminds me how I've chosen to follow a racing tipster just from the point he missed 28 out of 30 predictions.