Final answer:
The scenario described in the question is an example of crowdsourcing, where users can post reviews of products on the website to help others evaluate the quality of the products before purchasing.
Step-by-step explanation:
The scenario described in the question is an example of crowdsourcing. Crowdsourcing is the practice of obtaining ideas, information, or services from a large group of people, typically through an online platform. In this case, the website allows users to post reviews of products, which helps other customers evaluate the quality of the products before purchasing.