Particularly interesting to me was this blog post by Jim C. Hines. Full of interesting links it's well worth looking at.
Through it I found Writing the Other by Nisi Shawl and Cynthia Ward (Aqueduct Press 2005, available both in paperback and as an ebook and highly recommended) which addresses the problems inherent in writing fiction outside your culture and suggests ways writers can avoid falling into the inevitable traps.
I had barely finished reading it when I came across these comments by Aliette de Bodard. Although she calls it a rant, it is really much more measured than that. As well as giving her opinion she also provides some useful links. The comments are interesting too.