What's the difference between an editor, author, and contributor on Blog Overflow?
Bonus points if you also include the other two (subscriber and administrator).
BlogOverflow uses Wordpress, so capabilities are the same as those outlined in WordPress Codex's Roles and Capabilities Table:
Authors can do everything contributors can, and:
Editors can do everything authors can, and:
Administrators have full control over the blog, including:
Subscribers are not used on Blog Overflow. They can only log in to read the blog, thus serving no purpose to us.
The recommended practice on Blog Overflow is for regular writers to be Contributors, for specifically appointed writers to be editors, and for moderators and SE staff to be Admins. The main difference between Contributors and Authors is that Contributors' posts must be approved by an editor before they are published live. This prevents posts from accidentally being published early if your blog has a schedule, and ensures some oversight of content.
BlogOverflow runs on WordPress, and all the roles are explained in the Roles and Capabilities page of the WordPress wiki: