Separate threads may not be necessary.  Maybe just like a Location tag at the beginning of player's posts.<br/><br/>So for example, those of us vampires at the manor at the moment.<br/><br/><strong>Location:</strong>Nix Manor  (or just something to indicate that we're at the same location)<br/><br/>Doesn't have to be specific, as that what your post is for, to describe your actions and such.  But just to give a general "overview" location.