I don't know why i'm having such a hard time finding a way of pulling the user_login based on the current blog ID, but i've searched and searched through the codex, functions/wpmu-functions and nothing really does this what seems to be very basic task. The blog_id is global, but all i really need to do is get the user_login name for the currently displayed blog, for use in a plugin. Help very much appreciated so i don't spend another 2 hours on this!