Actually i am seeing 10% referral commision but in OP it is 25%.
Reward seem really nice, but that puzzle question is actually quite hard to solve. Matching person's name with their country, but it is so hard that i had to use google to claim that 200 sat. LOL
Referral commission is 25%,I check few times and it is 50 satoshi for every claim of referral.For me it is just the contrary,that question is easy and much better then some other captcha.Presidents of France,USA or Germany is too easy,an we all know who is Arnold or Chuck
When you solve few of them it will get easier because they are repeated.