This isn't 100 percent completely confirmed, but reliable sources have told me that the Portland Storage sign that rises before commuters every time they cross the Morrison Bridge has been sold to Clear Channel. According to two people who rent space in the building, the sign will be painted over and Clear Channel will use it as a giant billboard.
I suppose that it is already a giant billboard right now, but it's a pleasing billboard. It's simple. It references the industrial uses of SE Portland. It's just plain better looking than a Burger King or Pruis ad.