Expert writers revise more frequently and are typically better at analyzing their own work. They are also more likely to avoid plagiarism by reading widely and thinking carefully about how others have written on the topic at hand. In addition to writing articles, books, and other material for publication, expert writers will often give speeches, lead workshops, and conduct interviews for distribution on DVD, online, or in person. They may also serve as critics or commentators for television or radio programs or appear in educational videos. Expert writers tend to be more involved with organizations and projects that have a strong political aspect, such as Amnesty International or PETA (People for the Ethical Treatment of Animals). They may have prominent positions within these groups or act as consultants, but they still earn a salary while working on these projects. Expert writers may also write music reviews for magazines or newspapers, or create instructional films for business owners to use in their workplaces. These are just some examples of what an expert writer may do. The only rule is that they must be writing about topics that interest them. It is not necessary for everyone to be an expert writer.