A multi-author blog is useful when a group of people with similar interests want to collaborate and share space to publish their writing or if an organization or company wants to have an online magazine. If that group wants to publish news on a particular topic, or on many topics in a broad sense, then they'll each need to be able to log in and post their content, update their profile, and so on. For example, I can decide that I want every member of my family to be able to contribute to my daily cooking blog. Each of my sisters, brothers, cousins, aunts, and uncles can add their recipes and discoveries regarding food, which has the potential to make my food blog a richer and more exciting place for visitors.
However, content moderation is also essential to a multi-author blog. The best way to keep a blog clean and relevant to the topic is...