It is pretty simple work once you get the hang of it. All you do is click links and review the site using the guidelines they give you. For example determine whether the site is a product, category, information etc site. Count the pictures, count the videos, etc.
It only pays 11 cents per site that you review. Some can be done in just a few seconds while others can take up to 10 mins. Not going to get you rich for sure but will give you some pocket money.
I did notice someone rejected one of mine so I guess I won't get paid for that one.
Im still trying to figure out this whole cloudcrowd work so I will keep updating.
If you want to give it a try please use my referral link