Very often, a community blog or group blog will shrink into a small group of bloggers (writers) who know and trust each other, called a "creative network". That kind of community blog will also have a larger group of people, a "social network", who only read (and maybe comment on) the blog. Some blogs have scoring (ranking) of posts that makes these networks more solid, so that postings that people like the most are shown first or in a way that is easier to find. 