text: The Miami imports outlines include this monstrosity that caught my eye.
  Although it more resembles the reality of the aerial imagery than the previous blank space, the quality of this data here is as bad as some of the worst low-resolution traces I've seen (mine included).  The imagery (newer Bing and USGS) shows trees which partially block the actual buildings, from which images it seems this data was derived or guessed, rather than from supplied building footprints.  I'm guessing the thin connections are covered walkways between the irregular polygons of the actual buildings -- which I discovered in another university as a separated building import.  Here too the imagery diverges from the imported outlines, which on other inspected complex data were well under a metre mostly-consistent offset from both above imageries.  Just pointing this out in case it gets overlooked otherwise...  For someone needing something to manually repair...
   --freebeer