I hadn't thought about that angle, but now that you said it I think you're absolutely right.  Some of those "coins" they have available for the investbox are absolute crap and I think they're only available on Yobit.  Some of them are just dead tokens that will never be resurrected and can't even be moved off the exchange--I have an account on Yobit and it looks like the wallets for some of those things are in maintenance mode, probably forever. 

I'm hoping people aren't actually buying coins like YONE, X10, and the rest with bitcoin in the hopes that they're going to earn massive returns, because I bet you that when they go to sell those coins back for bitcoin the market will turn out to be completely illiquid and they won't be able to get their orders filled.

I've always been on the fence about Yobit being an outright scam exchange, because I'd personally never had problems with them, but this crap with the investbox tomfoolery is really pushing the boundaries of scammy-ness.  Add that to all the scam accusation threads I've seen about them over the years and well....I've kind of made up my mind that they're as dishonest as they come.

Props for calling Yobit out on this, OP.