Well I was member there for more than 3 months and I was earning 1/2 $ a day... Then most of ny rented referrals stopped clicking and my account got negative balance. Ofc if you donate about 500 euro and buy platinum membership + many referrals there is a chance to win some tips...
In order to say that you earn 1/2 $ a day you should withdraw them and not invest them for an upcoming failure of your referrals...
This kind of companies are just a way to lose your time