Consumer reviews are valuable for understanding audience sentiment and can be collected from various sources, such as star ratings, written reviews, social media mentions, and discussion forums. Businesses use this data to enhance product offerings and marketing strategies by analyzing consumer feedback to determine product quality and campaign effectiveness. The text discusses different methods for collecting buyer reviews, including web scraping techniques using languages like Python, Java, and PHP, and using dedicated tools or datasets to simplify the process. These methods allow companies to gain insights into their competitive landscape and improve their operations based on consumer sentiment. However, companies need to be aware that websites frequently update their code, which might affect the effectiveness of these methods.