Blogs often are personal. Once it was identified with online diaries, now their range of topics is so wide that it seems unfair term. Blogs contain personal thoughts, observations, comments, drawings, and even recordings (audio and video) – presented in this way,’s worldview. Web logs are also many other applications: they can be used as a vertical portals dedicated to specific themes, marketing and communication tools (eg, political). While personal blogs tend to have a single author, whereas in other cases, the blog is often a number of authors (we are talking about the collective blog.