Book reviewers are individuals who read books and then write and publish their opinions about the book in various mediums such as newspapers, magazines, websites, blogs, or social media platforms. They provide their insights on the plot, characters, writing style, and overall quality of the book. Book reviewers can be professional critics, freelance writers, bloggers, or simply book enthusiasts who share their thoughts online. Their reviews can influence readers' decisions on whether or not to read a particular book.