I wasnt to do a 10% ETH Bonus for my Token Sale for direct referral. For example if you refer someone and they contribute 20ETH, you would get 2ETH. Is that a good idea for a bounty than can drive in customers?
You're going to get a lot of people who exploit this and it will effectively function as a 10% discount for them. I would advise trying to do something a little different, maybe instead of a large percentage go for a fixed amount.