one of the OrganikComponents
The Blog component allows users to maintain a personal blog space within the Organik platform. Within a blog the various pages are published in descending chronological order, a characteristic which makes it ideal to be used as personal experiences and know-how diaries, or even project monitoring diaries. An excellent feature is that other users can post comments in a very straightforward way and thus stimulate the exchange and diffusion of knowledge.
Drupal offers built-in support for blog spaces. Each user maintains her personal blog space, under which all blog pages are stored. A blog page is a separate content type for Drupal and can be configured distinctively.
Figure: Blog Component - A user's personal blog space