Including the possibility of uploading images and videos can increase the chances of getting an opinion, since people like to share multimedia content, especially if they particularly like a product. In other words, brands will obviously try to highlight every feature of the product in the best possible way, but it is the customers who will give an honest opinion about the product. Ask customers who bought you a review about a week after receiving their order (or later, if your customers aren't likely to use your products right away). If the product has the quality and people have given it positive feedback, more and more people will be encouraged to buy that product.
Customer participation on review sites provides valuable information to help the company to constantly improve and adjust its products and services.