The bloginfo module adds a blog title and description to your blogs. It is a simple module that adds 2 additional fields to the users account screen, for those who have permission, to have a blog title and blog description. These are then put into a block that can be placed like any other block. The title is the block title and the description is the block content.
The idea is to have a blog title and description like one via blogger.com.
The block will only display on a users blog list or blog post who have filled in the settings.