The user interface is minimalist, easy to navigate and there are plenty of reviews you can read. It includes the experience of a particular user, pros and cons. Basically, that's what you need to know in order to get a good grasp of a product before you use it.
The site also gives you information on how to do a review, it is located on Terms on use tab.
However, if you are concerned with your data, I did not find any Privacy Policy tab over the end of the page. That must be in that area and should indicate what they are doing on our data.
To sum up, this is a new opportunity to earn cryptocurrency just by creating an honest review based on your experience while using any products of a company. It is user friendly, but privacy policy is somehow missing.