There are four roles that you can assign to people who you want to blog with: Administrator, Editor, Author, and Contributor.Important: Please be careful of the roles you give users on your blog. If you add a user as an administrator, you are granting full ownership rights to him / her. This means that if he / she deletes the blog and / or its content, there is no wrongdoing. For this reason, we recommend having only one administrator per blog. Also note that all user roles provide access to a site’s stats. Administrator
An administrator has full and complete ownership of a blog, and can do absolutely everything. This person has complete power over posts/pages, comments, settings, theme choice, import, users – the whole shebang. Nothing is off-limits, including deleting the entire blog. Only one administrator per blog is recommended!
An editor can view, edit, publish, and delete any posts/pages, moderate comments, manage categories, manage tags, manage links and upload files/images.
An author can edit, publish and delete their posts, as well as upload files/images. Authors do not have access to modify, add, delete, or publish pages.
A contributor can edit their posts but cannot publish them. When a contributor creates a post, it will need to be submitted to an administrator for review. Once a contributor’s post is approved by an administrator and published, however, it may no longer be edited by the contributor. A contributor does not have the ability to upload files/images.
Your followers are the people who have signed up to receive updates each time you publish new content. They do not have any editing privileges. If your blog is public, anyone can follow it, but you may want to send out invitations to specific people who you’d like to share your blog with.
If you’re a blog Administrator and you’d like to make someone a Contributor, Author, or Editor on your site, please follow the directions on adding contributors.
Adding Viewers to a Private Blog
If you want others to be able to view your private blog (and add comments, if you’ve enabled them) you’ll need to invite them to be a viewer.