That's a little plugin called CoAuthors, and it's sleek and dependable -- best of all, far as I've been able to tell, no conflicts with other plugins.
One thing, if you've not figured this out yet: there is a MAJOR bug in WP, due to Ajax-conflicts in the Edit-Posts page. If you do a Quick Edit on a post, you will lost all but your native taxonomies -- all other taxonomies, custom fields, co-authors, and all that jazz... goes bye-bye. I've yet to hear if it's been solved in WP2.8, but I doubt it, since the issue is deepdown in the core, from what I've been able to tell. Just FYI.
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Date: 30 Jun 2009 02:02 am (UTC)One thing, if you've not figured this out yet: there is a MAJOR bug in WP, due to Ajax-conflicts in the Edit-Posts page. If you do a Quick Edit on a post, you will lost all but your native taxonomies -- all other taxonomies, custom fields, co-authors, and all that jazz... goes bye-bye. I've yet to hear if it's been solved in WP2.8, but I doubt it, since the issue is deepdown in the core, from what I've been able to tell. Just FYI.