Everybody’s doing it! And while that logic never got far with your mother, it’s a fine reason to start blogging, especially if you have a business to build or a cause to promote. Well-run blogs do more than offer an outlet for your thoughts. They’ve actually influenced everything from a company’s image to the outcome of a local election. Because the blogosphere is pretty crowded, it’s a good idea to find out a bit about the anatomy of a blog, what makes a good one, and what it takes to keep one...