On e-commerce sites, methods of faking user reviews and ratings to improperly boost product sales may include: 1. **Fake accounts**: Creating a large number of fake accounts to write positive reviews and high ratings for products. These accounts are often generated in bulk using automated tools. 2. **Buying reviews**: Buying positive reviews through third-party services. These services often employ real users or use bots to write fake reviews. 3. **Manipulating existing reviews**: Removing or hiding negative reviews and only displaying positive reviews, or incentivizing customers to modify or delete negative reviews by offering discounts, cashback, etc. 4. **Brushing**: Increasing product sales and ratings through fake purchases (i.e., brushing), which is often accompanied by fake positive reviews. 5. **Incentivized reviews**: Offering discounts or free gifts to incentivize customers to write positive reviews, which increases the bias of the reviews. 6. **Using friends and family**: Obtaining positive reviews from friends or family, which often lack authenticity. This behavior is not only unethical, but also violates the policies of most e-commerce platforms. Once discovered, it may result in the store being blocked, products being removed from the shelves, or other penalties. Consumers should be cautious when shopping and pay attention to the authenticity of reviews and the credibility of the reviewers.