I'm not even familiar to one of those posted or maybe I don't really pay attention because I have a busy life and only Bitcointalk forum and exchangers that I come to visit each day(aside from my social media accounts)
But now since that you mentioned those here , then I will be going to check each of one mate and thanks in advance for that.
Many of them are marketplaces for freelancers. While some are like task type websites. As long as they're legit, test them if they really pay.
But be careful also with random and unknown platforms that asks money to deposit because that's already a red flag that you should remember.
Anyway, I hope that OP will still update the list and adds more that are genuine.
Yes you are correct , we must be ready for risk and we should learn how to manage our expectations .