so here is my understanding now. PPI pays less and it's easier because it takes users less time? I have gone through a survey and it's almost impossible to complete. it's never ending questions, one after another. by the time i am 30/100, i already clearly feel that i am fooled. so my question is: what makes people actually complete a survey? When both PPI and survey are incentive offers. do surveys need different kind of incentives? they need to be done differently? reason i ask is because the same incentive works for PPI, but i cannot get a conversion on a survey?