Does anyone know of a plugin/hack that will allow the WPMU admin to "act" as another user? There are various scenarios where that would be useful, to do things as another registered user, without having to change and reset the users password.
The trouble I've been having now, while moving some blogs from one WPMU to another is that when importing posts as admin to another blog, even though I choose the correct user to map the posts to, owner is set to admin, and not the user.