I don't have anything to say about Song Of Susannah right now, but it occurs to me that there's a need for threads that first time Dark Tower readers can go to to talk about what they've read so far without being exposed to information about the later books in the series. Maybe these could be stickied...

New readers: discuss your story.

Old readers: be on your very best behavior and don't don't don't ever address things that come later in the series -- don't "spoil" the journey for your fellow-travelers.

We all float down here.