Multiple authors theme recommendation

Well some of those magazine themes, particularly Darren Hoyt’s Mimbo, seem to have the author tag already activated. You might want to check that one out. There’s a new Mimbo PRO version, but I believe there’s also a free version still out there for download.

http://www.darrenhoyt.com/2007/08/05/wordpress-magazine-theme-released/

And he goes into some detail here about some of the elements of the theme. You may be interested in #9, Contributors (authors), which you can use to modify any theme to behave this way.

http://www.darrenhoyt.com/2007/07/24/in-praise-of-wordpress-template-tags-part-ii-the-magazine-layout/