As far as the scam accusations againt yobit go, I've seen many of them but I rarely see any follow-up on them, so I never really know if the issues were resolved.
You don't really need follow-up on these accusations to see that something is definitely going wrong on their site.
I'm not saying that the entire site is a scam, but they're definitely trying to wrestle away as much money from their customers as they can through Pump & Dumps, preying on the unknowingness of their "new" customers. (which is 100% gambling with really, really bad odds, without most users knowing it.), and their InvestBox, which, although they say it isn't, is the literal definition of a ponzi, where you receive x% of useless tokens daily.
https://yobit.net/en/investbox/ - "Tool for devs to promote their coins" - my ass.
There's a literal timer counting down until their next P&D IEO scam is happening.
https://yobit.net/en/ico/timer/Not to mention their questionable ticker practices;
https://bitcoinexchangeguide.com/warning-russian-crypto-exchange-yobit-uses-ticker-name-to-fraud-traders/
I'm not saying Yobit shouldn't be allowed to be promoted / that their members should be tagged, but it really shows to me these participants have no morals/don't care what they're promoting at all.
Perhaps i'm speaking from a position of luxury, and kind of hypocrite. I don't know. Might be just me.