I have recently been added as an author on a large, multi-author blog. I could like to automatically Tweet links to my own posts, without doing the same for other authors.
When I set up Publicize within my own post editing screen, does that apply automatically to the entire blog?
Every Author of a WordPress.com blog can publish their own posts to an individual Facebook page, that he/she is an administrator/owner. Authors can publish their own posts and can publicize as well if it has been set up on their Global Dashboard. WordPress.com Publicize takes you to Facebook.com, where you need to authorize either a page or profile, where your posts are to be published. So what is required is for authors to an Administrator of that specific Facebook page. http://en.support.wordpress.com/publicize/#per-blog-and-per-user