Blogs are web logs that allow people to share information on any topic. Bloggers participate in influencing public opinion as speakers and writers in the public square. Great bloggers speak with informed, personal authority through an honest, lively voice and engage readers in productive conversations through comments. To write a great blog, one should write about their passions and admit when they don't know something, seeing their posts as the start of a discussion rather than the final word. Linking to other blogs and commenting on them helps bloggers become more visible and bring in more readers.