Hi. So far I have not received my first payment, I still need a lot for that. But I know it's not impossible. I have read in google quite a bit about this site, and I have found that they do pay. Not just one person, there were many people who said this. Personally I believe it.
Their payment system is interesting, because you have to answer many questions and expect your questions to be well received. You must be constant, and it seems to me that it is not impossible because there is a user who has been active for one month and already has many answers!