This Free Dollars scheme is to be able to attract more new members and also gain free publicity
Yobit is very good in giving airdrops and free money but those receivers end up losing a lot, I have been a receiver of their pump and dump coin and I lose because of their pump and dump system in their platform, so the best thing to do whenever you received airdrop coming from Yobit is to just dump it and don't look back again, it will be good for you.
Under that circumstance no point of having those airdrop or even having an account their if that is the case and instead having the account in the best of the exchanges is much better atleast you are assured of your coins and do know that such dump coins might not get listed which may result in waste of time and money.