There are a few other sites I love that have great discussions on North and South:
WestofMilton.com -- Another blog focused largely on North and South.
Goodreads.com -- There's a North and South group here with a focus on Gaskell's works.
Group Read Discussions
I've helped moderate several Internet group reads of Gaskell's books. You're always welcome to add your insights and comments!
North and South Fan fiction
The world of North and South fan fiction started, for me, with the wonderful collection of stories available at C19 Proboards (which, sadly, is no longer accessible to new members). I have a page dedicated to fan fiction here.
I've written a post about some of my favorite stories at The Armitage Authors Forum here.
Guest Blog Posts
Here are some of the guest posts I've been honored to write at other sites:
10 Ways the Film is Not Like the Book
Mrs John Thornton: Bliss or Bondage?