This blog is maintained by Christy Dena  and includes a WTF is Transmedia section, blog articles, and an invitation for guest bloggers.
From the blog:
"The aim of this site?: To progress the state of art of transmedia.
How?: Sharing war stories, fun and sincere reflections, and stuff we find frustrating and downright bad
What is wanted?: Passionate and well-considered writings on good, bad and ugly transmedia decisions