I agree,its not possible to get too many refferals
well it can be very hard. but 0.3BTC is a huge amount of money. if you play smart you can earn that much.. you can't make that much referrals for free. but if you invest small amount of money you can get referrals. (I am not forcing you to invest your money) it is a general method to get referrals. everyone get referrals by advertising their referral links in websites Etc.
yes, you're right. But we talk about only one day for promotions.
I did not try because I know that I could not achieve on just one day